M31 - Andromeda Galaxy · RGB Session 2 · 2026-10-18

Observing conditions

Saved context for this physical observing session. Separate time spans remain visible below.

RGB · 2026-10-18 19:37:35 CEST (UTC+0200) → 2026-10-18 21:46:52 CEST (UTC+0200)

Moon · calculated

51.1%

Illuminated · Waxing

Altitude 13.6°

Reference: 2026-10-18T18:42:14.269 UTC

Observing site

—

Location not recorded, or withheld in this read-only share.

Weather · model context

ECMWF IFS archive · Open-Meteo

Cloud cover: 2.0–21.0 %
Dew point: 4.2–4.8 °C
Relative humidity: 54.0–64.0 %
Air temperature: 11.3–13.4 °C
Wind at 10 m: 4.5–4.5 m/s

Ranges of hourly model samples. Air temperature is not sensor temperature.

Hourly values and coverage

UTC	Air temperature · °C	Relative humidity · %	Dew point · °C	Cloud cover · %	Wind at 10 m · m/s
2026-10-18T17:00:00+00:00	13.4	54.0	4.2	2.0	4.5
2026-10-18T18:00:00+00:00	12.3	58.0	4.2	21.0	4.5
2026-10-18T19:00:00+00:00	11.3	64.0	4.8	7.0	4.5

Hourly gridded model context, not measurements at the telescope. Hourly samples bounding this exposure-group interval; no minute interpolation.

Cloud cover: 3/3 samples; Dew point: 3/3 samples; Relative humidity: 3/3 samples; Air temperature: 3/3 samples; Wind at 10 m: 3/3 samples

Retrieved 2026-10-20T16:42:34.767868+00:00

Provider and model documentation

Context provenance and limits

Recorded DATE-OBS time interpretation retained; if TIMESYS is absent it is provisionally UTC.

Saved calculation at this exposure group's midpoint. Geometric altitude assumes sea level, no terrain or refraction. Schematic orientation, not a sky photograph.

Weather does not establish seeing, transparency at the telescope, a Bortle class or a photometric correction. Missing values do not imply clear skies.

Saved context SHA-256: 3576989fd42412dc20f638a79fc448aa2d0e689e449fb8a7a37a7f19c14cdde2

RGB · 2026-10-18 23:05:49 CEST (UTC+0200) → 2026-10-19 04:25:52 CEST (UTC+0200)

Moon · calculated

53.1%

Illuminated · Waxing

Altitude -23.4° · below the geometric horizon

Reference: 2026-10-18T23:45:50.731 UTC

Observing site

—

Location not recorded, or withheld in this read-only share.

Weather · model context

ECMWF IFS archive · Open-Meteo

Cloud cover: 0.0–2.0 %
Dew point: 3.8–4.9 °C
Relative humidity: 66.0–81.0 %
Air temperature: 7.5–9.9 °C
Wind at 10 m: 4.2–4.9 m/s

Ranges of hourly model samples. Air temperature is not sensor temperature.

Hourly values and coverage

UTC	Air temperature · °C	Relative humidity · %	Dew point · °C	Cloud cover · %	Wind at 10 m · m/s
2026-10-18T21:00:00+00:00	9.9	66.0	3.8	0.0	4.3
2026-10-18T22:00:00+00:00	9.3	70.0	4.2	0.0	4.2
2026-10-18T23:00:00+00:00	8.8	76.0	4.8	0.0	4.4
2026-10-19T00:00:00+00:00	8.3	79.0	4.9	0.0	4.9
2026-10-19T01:00:00+00:00	7.9	80.0	4.7	2.0	4.9
2026-10-19T02:00:00+00:00	7.5	81.0	4.5	2.0	4.8

Hourly gridded model context, not measurements at the telescope. Hourly samples bounding this exposure-group interval; no minute interpolation.

Cloud cover: 6/6 samples; Dew point: 6/6 samples; Relative humidity: 6/6 samples; Air temperature: 6/6 samples; Wind at 10 m: 6/6 samples

Retrieved 2026-10-20T16:42:35.286593+00:00

Provider and model documentation

Context provenance and limits

Recorded DATE-OBS time interpretation retained; if TIMESYS is absent it is provisionally UTC.

Saved calculation at this exposure group's midpoint. Geometric altitude assumes sea level, no terrain or refraction. Schematic orientation, not a sky photograph.

Weather does not establish seeing, transparency at the telescope, a Bortle class or a photometric correction. Missing values do not imply clear skies.

Saved context SHA-256: 83e296a4655c2cc203a2e55cfe4c2dd448caf5768789bdac60dbe69fc1893e25

Separate exposure, camera-orientation or calibration groups within this observing session. Their images and measurements remain separate.

Group 1 · RGB · 120 s · 55 Lights

1 h 50 min · 55 exposures available.

Selected input exposures

Image quality at a glance

Selected inputs against your whole archive · RGB and DNB remain separate.

RGB · all contributing sessions

Star width / FWHM: 2.90 sensor pixels; Current archive average3.00 sensor pixels; Difference -0.10; 55/55 selected · archive 865/865 exposures · 11 sessions · 8 objects
Star shape / eccentricity: 0.42 dimensionless; Current archive average0.45 dimensionless; Difference -0.03; 55/55 selected · archive 865/865 exposures · 11 sessions · 8 objects
Background: 939.00 ADU; Current archive average749.61 ADU; Difference +189.39; 55/55 selected · archive 865/865 exposures · 11 sessions · 8 objects
Background scatter: 47.69 ADU; Current archive average34.26 ADU; Difference +13.43; 55/55 selected · archive 865/865 exposures · 11 sessions · 8 objects
Stellar model SNR: 165.66 dimensionless; Current archive average138.73 dimensionless; Difference +26.92; 55/55 selected · archive 865/865 exposures · 11 sessions · 8 objects; Stellar model estimate · different fields

Star width / FWHM — Selected exposure values · whole-archive RGB mean · physical sessions separated.

Star shape / eccentricity

Background

Background scatter

Stellar model SNR

How this archive average is calculated

Each unique original exposure contributes once per valid saved metric. Arithmetic mean across all objects; RGB and DNB separate. Missing or invalid values are excluded, never zero. This descriptive reference includes the selected exposures and later nights.

Exposure, camera settings, field brightness, sampling and stellar populations may differ. Background and stellar model SNR are not normalized measures of sky quality, master SNR or detection sensitivity. A difference is not a grade.

Stored per-frame medians of stellar fits are averaged; stars are not pooled. SNR requires a positive recorded effective gain and at least five stellar estimates. Units remain separate. Unknown method versions are recorded, not invented. Small, undersampled stars may bias shape measurements.

Archive version ab3717b4ec376ea87d5261c94fe6dbbd42a97237e09422490b5844921d286006

Matched acquisition settings · original session-weighted comparison

Selected input exposures

Image quality at a glance

Measurements of the selected input exposures, not the finished master.

RGB · 120.0 s · 55 Lights

Acquisition settings & contributing sessions

120.0 s · Gain 100.0 · Archive snapshot 2026-11-09T03:24:34.927460+00:00

Recorded focal length: 612.0 mm · separate header/settings cohorts, not additional observing sessions.

Acquisition · 2026-10-18 · recorded DATE-OBS

Execution version was not saved: this comparison is limited to the same observing session.

Star width (FWHM): 2.90 sensor pixels; Current archive average2.86 sensor pixels; Difference +0.04 sensor pixels; 55/55 frames · archive: 1 Sessions
Star shape: 0.42 dimensionless; Current archive average0.44 dimensionless; Difference -0.02 dimensionless; 55/55 frames · archive: 1 Sessions; Eccentricity of stellar model fits
Background: 939.00 ADU; Current archive average871.35 ADU; Difference +67.65 ADU; 55/55 frames · archive: 1 Sessions
Background scatter: 47.69 ADU; Current archive average44.77 ADU; Difference +2.92 ADU; 55/55 frames · archive: 1 Sessions
Stellar SNR: 165.66 dimensionless; Current archive average162.56 dimensionless; Difference +3.10 dimensionless; 55/55 frames · archive: 1 Sessions; Model estimate · same target field

Star width (FWHM) over time — Star width (FWHM) · saved per-exposure values and current archive average. Sessions are separate; gaps are not joined.

Star shape · Trend

Star shape over time — Star shape · saved per-exposure values and current archive average. Sessions are separate; gaps are not joined.

Background · Trend

Background over time — Background · saved per-exposure values and current archive average. Sessions are separate; gaps are not joined.

Background scatter · Trend

Background scatter over time — Background scatter · saved per-exposure values and current archive average. Sessions are separate; gaps are not joined.

Stellar SNR · Trend

Stellar SNR over time — Stellar SNR · saved per-exposure values and current archive average. Sessions are separate; gaps are not joined.

Provisional star fits · stellar SNR is a model estimate, not master SNR.

Reading these values

Provisional stellar models: undersampled stars can bias the measurements. Differences are not quality grades. Stellar SNR is not nebular or master-image SNR.

Processing and calibration record

Processing for this session

Calibrationsuccess
Registrationsuccess
Stackingsuccess
ReportSaved results

55/55 Lights calibrated; {'bias': 82, 'dark': 40, 'flat': 40} calibration frames. Unknown compatibility fields: device_id, filter, optical_configuration, readout_mode.

Calibration and processing evidence

{
  "calibrated": 55,
  "calibration_state": "success",
  "crop": {
    "area_fraction": 0.9790115212346878
  },
  "integration_s": 6600.0,
  "planned": 55,
  "ready": 55,
  "registered": 55,
  "registration_state": "success",
  "selected_calibrations": {
    "bias": 82,
    "dark": 40,
    "flat": 40
  },
  "stacked": 55,
  "stacking_state": "success",
  "unknown_fields": [
    "device_id",
    "filter",
    "optical_configuration",
    "readout_mode"
  ],
  "warnings": [
    "Bias is used for flat correction only; exposure/linearity suitability remains unvalidated",
    "Flat exposure is not matched to light exposure; flat dark current, illumination and physical optical-state continuity remain unvalidated",
    "Raw ROTATOR/angle semantics are unverified; differences are not evidence of physical rotation.",
    "Short-Flat/Light temperature tolerance: +/-2 C; Dark and Bias tolerances unchanged. Flat diagnostics and optical-history approval remain required.",
    "device_id: compatibility unknown; permitted only by explicit warning policy",
    "filter: compatibility unknown; permitted only by explicit warning policy",
    "optical_configuration: compatibility unknown; permitted only by explicit warning policy",
    "readout_mode: compatibility unknown; permitted only by explicit warning policy"
  ]
}

Explore stars in the image

Verified image · RGB · 2026-10-18

All verified starsGaia-ID Star

566 verified identities; 12 spatially distributed highlights. Query: G < 16, at most 5000 sources; fainter neighbours may be absent.

Farb-Helligkeits-Diagramm · Gaia G / BP−RP

Scheinbare Kataloghelligkeit, kein HR-Diagramm; Staub und Distance wirken mit.

Identity, data and limitations

Holdout residual: median 0.5989053236619459 px; 95 % 1.2599321342428518 px. G<16; fainter neighbours may be absent. Historical solver training set is unknown.

Temperature, mass and radius are catalogue model estimates, not stellar parameters measured from this photograph.

Exact catalogue values and geometry

Science & measurements

Experimental photometry · no confirmed transit. 0 unresolved technical review items.

Histograms, light curves & event evidence

Intensity histograms

RGB · 55/55 original exposures measured.

RGB · Raw pixel values

ADU · decoded digital value · Pixel count per bin; not a wavelength spectrum.

Channel Range Pixel count

All saved bins, including negative values.

Exact counts and measured values

Werte und Darstellungsbins · Complete unchanged bins (NPZ)

Histogram of this display product is unavailable.

Events · technical review

Searched · no flagged review item

0 unresolved technical review items · 16 Gaia IDs searched · 1488 tested windows. Windows are not independent events.

No confirmed transit. Short artifact clusters and time-correlated errors can pass this screening. Real periodic search: insufficient coverage; no globally calibrated false-alarm probability is available.

Saved event evidence

Test windows, supporting exposures and limitations

Photometry precision and sampling · experimental

Photometry & transit readiness

Individual native exposures, independent of the final display/HDR image. Conditional measurement errors include the comparison ensemble; shared systematics remain outside that model.

M31 — Andromeda Galaxy · RGB · 120 s · 55 frames

measured diagnostics · 55 timed frames; 0 timing exclusions.

Separate segment c89e6af2: 0.14 h span · 190.4 s median cadence · 71.9% exposure duty · 0 large gap(s); 0 overlapping recorded intervals (bins unavailable when present).

Separate segment 79cd3312: 2.01 h span · 123.5 s median cadence · 86.0% exposure duty · 2 large gap(s); 0 overlapping recorded intervals (bins unavailable when present).

Brightness comparison is observational: sources share sky and calibration; points are not independent trials.

Measured target / segment

Gaia 387328023430130176 · G 12.54

3/3 valid epochs · robust scatter 2.82% · median conditional error 2.37%. measured, not suitable for search.

Precision at common wall-clock intervals

1.4826 × median absolute deviation divided by median. Nonoverlapping bins never split an exposure; boundary crossings remain in the native curve. Sparse bins do not establish a precision improvement.

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381203189614455680 · G 12.69

3/3 valid epochs · robust scatter 0.61% · median conditional error 1.98%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 375221124801262208 · G 12.85

3/3 valid epochs · robust scatter 2.00% · median conditional error 2.80%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381222813319199744 · G 12.86

3/3 valid epochs · robust scatter 0.07% · median conditional error 2.94%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381135986260425984 · G 13.02

3/3 valid epochs · robust scatter 2.71% · median conditional error 3.42%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381296858563921408 · G 13.04

3/3 valid epochs · robust scatter 0.75% · median conditional error 2.31%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381214498262497920 · G 13.05

3/3 valid epochs · robust scatter 5.68% · median conditional error 2.68%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381318024162717184 · G 13.05

3/3 valid epochs · robust scatter 4.30% · median conditional error 2.24%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 369013458245712128 · G 13.07

3/3 valid epochs · robust scatter 2.78% · median conditional error 2.41%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381141758696449280 · G 13.07

3/3 valid epochs · robust scatter 0.55% · median conditional error 1.93%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381169005969155584 · G 13.07

3/3 valid epochs · robust scatter 0.63% · median conditional error 2.67%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381136776534401664 · G 13.08

3/3 valid epochs · robust scatter 3.26% · median conditional error 2.23%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 369243256178304128 · G 13.09

3/3 valid epochs · robust scatter 0.09% · median conditional error 2.00%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381416018126720000 · G 13.10

3/3 valid epochs · robust scatter 0.25% · median conditional error 2.15%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 381322731444065920 · G 13.11

3/3 valid epochs · robust scatter 0.48% · median conditional error 1.99%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 375300293935503744 · G 13.12

3/3 valid epochs · robust scatter 0.85% · median conditional error 2.52%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: 0.00% · 1 usable bins · 0 native points outside this binned view · descriptive only; 3–3 exposures/bin, 360–360 s integrated, 60–60% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 40–40% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 3–3 exposures/bin, 360–360 s integrated, 20–20% coverage.

Gaia 387328023430130176 · G 12.54

52/52 valid epochs · robust scatter 2.30% · median conditional error 2.15%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.22% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.08% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.89% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.23% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381203189614455680 · G 12.69

52/52 valid epochs · robust scatter 1.47% · median conditional error 1.83%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 0.80% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.31% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.83% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.21% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 375221124801262208 · G 12.85

52/52 valid epochs · robust scatter 3.04% · median conditional error 2.48%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.55% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.56% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.82% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.82% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381222813319199744 · G 12.86

52/52 valid epochs · robust scatter 2.45% · median conditional error 2.62%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.77% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.04% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 1.24% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.24% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381135986260425984 · G 13.02

52/52 valid epochs · robust scatter 2.21% · median conditional error 3.08%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 2.02% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.69% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 1.04% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.65% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381296858563921408 · G 13.04

52/52 valid epochs · robust scatter 2.12% · median conditional error 2.10%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.23% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.62% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.95% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.14% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381214498262497920 · G 13.05

52/52 valid epochs · robust scatter 2.13% · median conditional error 2.40%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.99% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.62% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.61% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.05% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381318024162717184 · G 13.05

52/52 valid epochs · robust scatter 1.47% · median conditional error 2.04%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.58% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.51% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.45% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.21% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 369013458245712128 · G 13.07

52/52 valid epochs · robust scatter 2.01% · median conditional error 2.14%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 2.35% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.30% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 1.23% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.54% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381141758696449280 · G 13.07

52/52 valid epochs · robust scatter 1.92% · median conditional error 1.83%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.59% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.96% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.67% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.68% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381169005969155584 · G 13.07

52/52 valid epochs · robust scatter 2.30% · median conditional error 2.43%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.49% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.92% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.75% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.56% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381136776534401664 · G 13.08

52/52 valid epochs · robust scatter 1.99% · median conditional error 2.00%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.57% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.36% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.68% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.37% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 369243256178304128 · G 13.09

52/52 valid epochs · robust scatter 1.79% · median conditional error 1.80%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 0.80% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.33% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.63% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.61% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381416018126720000 · G 13.10

52/52 valid epochs · robust scatter 2.02% · median conditional error 1.95%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 0.92% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.31% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 1.09% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.73% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 381322731444065920 · G 13.11

52/52 valid epochs · robust scatter 1.86% · median conditional error 1.80%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.75% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.80% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.55% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.22% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Gaia 375300293935503744 · G 13.12

52/52 valid epochs · robust scatter 2.00% · median conditional error 2.17%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.83% · 9 usable bins · 20 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.88% · 11 usable bins · 10 native points outside this binned view · descriptive only; 2–4 exposures/bin, 240–480 s integrated, 40–80% coverage.
15 min: 0.93% · 8 usable bins · 6 native points outside this binned view · descriptive only; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.62% · 4 usable bins · 3 native points outside this binned view · descriptive only; 11–13 exposures/bin, 1320–1560 s integrated, 73–87% coverage.

Recommended next acquisition: characterize unsaturated stars with matched short-exposure Darks and same-session Flats, then keep one exposure/filter configuration through a dedicated known-host event and its before/after baseline. There is no real 60/120 s improvement demonstrated here.

Timing, uncertainty and applicability

Not calibrated standard magnitudes. Native G1+G2 response/Flat/pixel-phase and shared errors remain unbounded.
Recorded header start times support relative intervals; TIMESYS and clock accuracy are not established. No BJD_TDB.
References exclude each target but share sky/calibration systematics. Conditional errors hold median normalizations fixed.
No new search is run here. Existing event evidence and eligibility are retained; review scores are not calibrated false-alarm probabilities.
No new aperture is promoted. Mixed exposures, passbands, nights and calibration/angle segments stay separate.

Exact native-photometry diagnostics

Conditional errors, rates, source/reference IDs and precision support

Comparison-star evidence · experimental

Comparison-star robustness check

Could a more robust reference ensemble improve these light curves? This controlled experiment reuses the original native fluxes. Your published scientific curves and event results remain unchanged.

RGB · 120.0 s · 0 supported source/segment tests

Insufficient contiguous data or independent references for the blocked comparison.

3 contiguous blocks are too short; no test is forced across the gap.

1 contiguous blocks are too short; no test is forced across the gap.

Scientific baseline retained. No promotion from scatter alone; independent control observations and a calibrated uncertainty model are still required.

Validation design and limits

Four contiguous held-out folds per sufficiently long uninterrupted block, with one purged epoch on each side. Reference medians are learned only from training epochs; each target is excluded from its references. Fixed Huber cutoff 1.5, at least six references. No hyperparameter search or target-based refitting.

Blocked epoch checks within existing calibration/orientation segments, not independent new-night validation.
Stars share references and are not independent trials; no p-values or discovery probability are inferred.
Lower scatter may remove reference contamination but does not prove better physical accuracy.
Existing shared-master, flat, centroid, sampling and clock uncertainties remain unresolved.
Artificial dimming checks algebraic signal transfer only, not transit detection or recovery efficiency.
No re-fitting, smoothing or interpolation of target flux; gaps and unavailable measurements remain gaps.

Reference comparison evidence

Held-out folds, reference membership, unchanged baseline and signal-transfer checks

Example measured light curve

2026-10-18 · RGB · Gaia 369013458245712128. First available session and source ID; not selected for apparent variability.

Native G1+G2 measurements · separate calibration segments · no connecting lines.

All saved stellar light curves

2026-10-18 · RGB · Gaia 369013458245712128 · 55 valid epochs
2026-10-18 · RGB · Gaia 369243256178304128 · 55 valid epochs
2026-10-18 · RGB · Gaia 375221124801262208 · 55 valid epochs
2026-10-18 · RGB · Gaia 375300293935503744 · 55 valid epochs
2026-10-18 · RGB · Gaia 381135986260425984 · 55 valid epochs
2026-10-18 · RGB · Gaia 381136776534401664 · 55 valid epochs
2026-10-18 · RGB · Gaia 381141758696449280 · 55 valid epochs
2026-10-18 · RGB · Gaia 381169005969155584 · 55 valid epochs
2026-10-18 · RGB · Gaia 381203189614455680 · 55 valid epochs
2026-10-18 · RGB · Gaia 381214498262497920 · 55 valid epochs
2026-10-18 · RGB · Gaia 381222813319199744 · 55 valid epochs
2026-10-18 · RGB · Gaia 381296858563921408 · 55 valid epochs
2026-10-18 · RGB · Gaia 381318024162717184 · 55 valid epochs
2026-10-18 · RGB · Gaia 381322731444065920 · 55 valid epochs
2026-10-18 · RGB · Gaia 381416018126720000 · 55 valid epochs
2026-10-18 · RGB · Gaia 387328023430130176 · 55 valid epochs

Appendix · measurement methods & observing conditions

Observing nights and Moon

RGB

2026-10-18 19:37:35 CEST (UTC+0200) → 2026-10-18 21:46:52 CEST (UTC+0200)

51.1% Moon illumination · saved calculation

Altitude 13.6°Target separation —

Mitte des Aufnahmezeitraums

Original saved observation note

Time assumption: DATE-OBS interpreted as UTC because TIMESYS is missing. Astronomical context is provisional.

Original saved observation note

Moon altitude is approximate; local Earth-orientation data may be incomplete.

Original saved observation note

Geometric Moon altitude, without terrain or refraction; site elevation assumed to be 0 m.

Saved time assumptions are unchanged. Site and weather are shown on the session pages.

Explain this comparison

Comparison with your current archive: each physical observing session has equal weight. Valid per-exposure values are first averaged within each session, then the session means are averaged. Later sessions and the exposures shown here may be included. This is neither an independent test nor a formal quality grade.

Selected data use the exact input IDs of this product. RGB and DNB, methods, units, sampling and recorded acquisition settings remain separate. Unknown setup metadata do not establish physical compatibility. A few sessions form only a small descriptive reference. Missing values do not count as zero.

FWHM and star shape are saved medians of the stellar fits in each exposure; the display averages these per-exposure values. Stellar SNR is the saved median of model estimates from at least five stars per exposure. Model: source Poisson noise, background variance and uncertainty in the mean local sky. Circular aperture radius 3, sky annulus 5–7 sampling pixels, 3σ clipping. EGAIN in electrons/ADU is required. Different star selections remain a limitation even within the same field.

Background and scatter are raw green-grid ADU under compatible acquisition conditions. Field emission, gradients and stellar populations limit comparison. These are not measurements of pure seeing, nebular SNR or transit sensitivity. The previous grading rule requiring eight other nights has not changed.

RGB · Stellar SNR: 55/55 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Background: 55/55 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Star shape: 55/55 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Star width (FWHM): 55/55 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Background scatter: 55/55 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

Archive version ab3717b4ec376ea87d5261c94fe6dbbd42a97237e09422490b5844921d286006. This export is a frozen snapshot; it does not update without a new export.

All measurements and frozen archive comparison

Individual-frame quality review · advisory

Image-quality assistant

8 selected frames worth reviewing · 55/55 inputs have enough same-session support. All frames remain selected exactly as before.

Separate raw measurements, compared with the median of the same session and recorded setup. No overall score, automatic rejection or diagnosis.

Review suggestions · 8 frames

Saved header time / input ID	Measurement	This frame	Session median	Why review?
2026-10-18T17:52:21.482623 4dde704d00d8	Stellar SNR estimate	106.8 dimensionless	165.4	Lower model SNR in the sampled stars; changing star selection may contribute.
2026-10-18T17:56:40.631610 66d59c888e5c	Stellar SNR estimate	103 dimensionless	165.4	Lower model SNR in the sampled stars; changing star selection may contribute.
2026-10-18T19:08:14.791077 389073bc6c3f	Star width (FWHM)	3.56 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-18T19:10:34.807619 28e4db1afe9f	Star width (FWHM)	3.358 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-18T19:16:52.271895 99ade5abbfd9	Star width (FWHM)	3.461 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-18T19:23:45.654888 166352339621	Star width (FWHM)	3.253 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-18T19:25:49.031875 d86452994ccd	Star width (FWHM)	3.398 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-18T19:44:52.848878 977c58d253cc	Star width (FWHM)	3.84 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.

Method, coverage and limitations

Review distance = (value − session median) / (1.4826 × MAD). The threshold 3.5 is an advisory rule, not statistical significance. At least 12 valid frames and 75% coverage are required; zero MAD is unavailable. SNR requires the existing gain and star-count checks. Background changes are flagged in either direction.

Shared tracking/focus problems can affect an entire night without producing an outlier. No independent validation labels exist yet. Raw-green sampling and changing star populations limit interpretation. RGB/DNB, exposure, method and recorded orientation remain separate; unknown metadata do not establish compatibility.

RGB · 120.0 s · session acq_aed4feba: Background level 93/93; Background scatter 93/93; Detected sources 0/93: too few valid session frames; Star eccentricity 93/93; Star width (FWHM) 93/93; Stellar SNR estimate 93/93. Unknown: device_id, filter, optical_configuration, readout_mode, recorded_orientation_deg.

Method session-quality-assistant-1. Saved measurements and existing archive comparisons are unchanged.

Group 2 · RGB · 120 s · 117 Lights

3 h 54 min · 120 exposures available.

Selected input exposures

Image quality at a glance

Selected inputs against your whole archive · RGB and DNB remain separate.

RGB · all contributing sessions

Star width / FWHM: 2.92 sensor pixels; Current archive average3.00 sensor pixels; Difference -0.08; 117/117 selected · archive 865/865 exposures · 11 sessions · 8 objects
Star shape / eccentricity: 0.52 dimensionless; Current archive average0.45 dimensionless; Difference +0.06; 117/117 selected · archive 865/865 exposures · 11 sessions · 8 objects
Background: 783.50 ADU; Current archive average749.61 ADU; Difference +33.89; 117/117 selected · archive 865/865 exposures · 11 sessions · 8 objects
Background scatter: 40.93 ADU; Current archive average34.26 ADU; Difference +6.67; 117/117 selected · archive 865/865 exposures · 11 sessions · 8 objects
Stellar model SNR: 140.71 dimensionless; Current archive average138.73 dimensionless; Difference +1.98; 117/117 selected · archive 865/865 exposures · 11 sessions · 8 objects; Stellar model estimate · different fields

Star shape / eccentricity

Background

Background scatter

Stellar model SNR

How this archive average is calculated

Archive version ab3717b4ec376ea87d5261c94fe6dbbd42a97237e09422490b5844921d286006

Matched acquisition settings · original session-weighted comparison

Selected input exposures

Image quality at a glance

Measurements of the selected input exposures, not the finished master.

RGB · 120.0 s · 79 Lights

Acquisition settings & contributing sessions

120.0 s · Gain 100.0 · Archive snapshot 2026-11-09T03:24:34.927460+00:00

Recorded focal length: 611.0 mm · separate header/settings cohorts, not additional observing sessions.

Acquisition · 2026-10-18–2026-10-19 · recorded DATE-OBS

Execution version was not saved: this comparison is limited to the same observing session.

Star width (FWHM): 2.98 sensor pixels; Current archive average3.04 sensor pixels; Difference -0.06 sensor pixels; 79/79 frames · archive: 1 Sessions
Star shape: 0.54 dimensionless; Current archive average0.55 dimensionless; Difference -0.01 dimensionless; 79/79 frames · archive: 1 Sessions; Eccentricity of stellar model fits
Background: 788.33 ADU; Current archive average789.18 ADU; Difference -0.85 ADU; 79/79 frames · archive: 1 Sessions
Background scatter: 41.11 ADU; Current archive average41.15 ADU; Difference -0.04 ADU; 79/79 frames · archive: 1 Sessions
Stellar SNR: 132.36 dimensionless; Current archive average132.63 dimensionless; Difference -0.27 dimensionless; 79/79 frames · archive: 1 Sessions; Model estimate · same target field

Star shape · Trend

Background · Trend

Background scatter · Trend

Stellar SNR · Trend

RGB · 120.0 s · 38 Lights

Acquisition settings & contributing sessions

120.0 s · Gain 100.0 · Archive snapshot 2026-11-09T03:24:34.927460+00:00

Recorded focal length: 612.0 mm · separate header/settings cohorts, not additional observing sessions.

Acquisition · 2026-10-18 · recorded DATE-OBS

Execution version was not saved: this comparison is limited to the same observing session.

Star width (FWHM): 2.81 sensor pixels; Current archive average2.86 sensor pixels; Difference -0.06 sensor pixels; 38/38 frames · archive: 1 Sessions
Star shape: 0.47 dimensionless; Current archive average0.44 dimensionless; Difference +0.03 dimensionless; 38/38 frames · archive: 1 Sessions; Eccentricity of stellar model fits
Background: 773.45 ADU; Current archive average871.35 ADU; Difference -97.91 ADU; 38/38 frames · archive: 1 Sessions
Background scatter: 40.55 ADU; Current archive average44.77 ADU; Difference -4.22 ADU; 38/38 frames · archive: 1 Sessions
Stellar SNR: 158.07 dimensionless; Current archive average162.56 dimensionless; Difference -4.48 dimensionless; 38/38 frames · archive: 1 Sessions; Model estimate · same target field

Star shape · Trend

Background · Trend

Background scatter · Trend

Stellar SNR · Trend

Provisional star fits · stellar SNR is a model estimate, not master SNR.

Reading these values

Provisional stellar models: undersampled stars can bias the measurements. Differences are not quality grades. Stellar SNR is not nebular or master-image SNR.

Processing and calibration record

Processing for this session

Calibrationsuccess
Registrationsuccess
Stackingsuccess
ReportSaved results

120/120 Lights calibrated; {'bias': 82, 'dark': 40, 'flat': 40} calibration frames. Unknown compatibility fields: device_id, filter, optical_configuration, readout_mode.

Calibration and processing evidence

{
  "calibrated": 120,
  "calibration_state": "success",
  "crop": {
    "area_fraction": 0.9462352090600027
  },
  "integration_s": 14040.0,
  "planned": 120,
  "ready": 120,
  "registered": 117,
  "registration_state": "success",
  "selected_calibrations": {
    "bias": 82,
    "dark": 40,
    "flat": 40
  },
  "stacked": 117,
  "stacking_state": "success",
  "unknown_fields": [
    "device_id",
    "filter",
    "optical_configuration",
    "readout_mode"
  ],
  "warnings": [
    "Bias is used for flat correction only; exposure/linearity suitability remains unvalidated",
    "Flat exposure is not matched to light exposure; flat dark current, illumination and physical optical-state continuity remain unvalidated",
    "Raw ROTATOR/angle semantics are unverified; differences are not evidence of physical rotation.",
    "Short-Flat/Light temperature tolerance: +/-2 C; Dark and Bias tolerances unchanged. Flat diagnostics and optical-history approval remain required.",
    "device_id: compatibility unknown; permitted only by explicit warning policy",
    "filter: compatibility unknown; permitted only by explicit warning policy",
    "optical_configuration: compatibility unknown; permitted only by explicit warning policy",
    "readout_mode: compatibility unknown; permitted only by explicit warning policy"
  ]
}

Explore stars in the image

Verified image · RGB · 2026-10-18

All verified starsGaia-ID Star

569 verified identities; 12 spatially distributed highlights. Query: G < 16, at most 5000 sources; fainter neighbours may be absent.

Farb-Helligkeits-Diagramm · Gaia G / BP−RP

Scheinbare Kataloghelligkeit, kein HR-Diagramm; Staub und Distance wirken mit.

Identity, data and limitations

Holdout residual: median 0.6042582315217044 px; 95 % 1.0720450907640968 px. G<16; fainter neighbours may be absent. Historical solver training set is unknown.

Temperature, mass and radius are catalogue model estimates, not stellar parameters measured from this photograph.

Exact catalogue values and geometry

Science & measurements

Experimental photometry · no confirmed transit. 3 unresolved technical review items.

Histograms, light curves & event evidence

Intensity histograms

RGB · 117/117 original exposures measured.

RGB · Raw pixel values

ADU · decoded digital value · Pixel count per bin; not a wavelength spectrum.

Channel Range Pixel count

All saved bins, including negative values.

Exact counts and measured values

Werte und Darstellungsbins · Complete unchanged bins (NPZ)

Histogram of this display product is unavailable.

Events · technical review

Searched · technical review pending

3 unresolved technical review items · 16 Gaia IDs searched · 4464 tested windows. Windows are not independent events.

Saved event evidence

Test windows, supporting exposures and limitations

Gaia 381220030180351360 · 7.51 % relative depth · 15 min · cause unresolved.

Gaia 381289329476254720 · 17.78 % relative depth · 15 min · cause unresolved.

Gaia 369127395139218560 · 6.92 % relative depth · 60 min · cause unresolved.

Photometry precision and sampling · experimental

Photometry & transit readiness

Individual native exposures, independent of the final display/HDR image. Conditional measurement errors include the comparison ensemble; shared systematics remain outside that model.

M31 — Andromeda Galaxy · RGB · 120 s · 117 frames

measured diagnostics · 117 timed frames; 0 timing exclusions.

Separate segment c85c04fb: 0.59 h span · 681.2 s median cadence · 22.5% exposure duty · 1 large gap(s); 0 overlapping recorded intervals (bins unavailable when present).

Separate segment 02d02ce1: 4.46 h span · 123.2 s median cadence · 84.5% exposure duty · 7 large gap(s); 0 overlapping recorded intervals (bins unavailable when present).

Brightness comparison is observational: sources share sky and calibration; points are not independent trials.

Measured target / segment

Gaia 369222567317250944 · G 12.63

4/4 valid epochs · robust scatter 0.55% · median conditional error 1.78%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381289329476254720 · G 12.82

4/4 valid epochs · robust scatter 1.51% · median conditional error 1.46%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381409966516376960 · G 12.87

4/4 valid epochs · robust scatter 0.43% · median conditional error 1.66%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381214498262497920 · G 13.05

4/4 valid epochs · robust scatter 3.04% · median conditional error 2.10%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381191580317044992 · G 13.13

4/4 valid epochs · robust scatter 0.55% · median conditional error 1.54%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 369225904510499584 · G 13.15

4/4 valid epochs · robust scatter 2.05% · median conditional error 1.68%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 375280365287429376 · G 13.15

4/4 valid epochs · robust scatter 0.48% · median conditional error 1.62%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 369127395139218560 · G 13.18

4/4 valid epochs · robust scatter 0.87% · median conditional error 2.39%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 375287340314289664 · G 13.23

4/4 valid epochs · robust scatter 1.31% · median conditional error 1.66%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381344034481859072 · G 13.26

4/4 valid epochs · robust scatter 1.02% · median conditional error 1.74%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381152272776336640 · G 13.26

4/4 valid epochs · robust scatter 0.55% · median conditional error 1.92%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381165810513518720 · G 13.28

4/4 valid epochs · robust scatter 4.28% · median conditional error 1.90%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 369147804824163840 · G 13.28

4/4 valid epochs · robust scatter 0.81% · median conditional error 1.76%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 375226592296928384 · G 13.28

4/4 valid epochs · robust scatter 2.59% · median conditional error 1.71%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 369252739466052352 · G 13.30

4/4 valid epochs · robust scatter 0.28% · median conditional error 2.18%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 381220030180351360 · G 13.30

4/4 valid epochs · robust scatter 2.35% · median conditional error 1.85%. measured, not suitable for search.

Precision at common wall-clock intervals

5 min: — · 0 usable bins · 2 native points outside this binned view · insufficient support; 1–1 exposures/bin, 120–120 s integrated, 40–40% coverage. Single-frame bins do not demonstrate averaging.
10 min: — · 0 usable bins · 1 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 20–40% coverage.
15 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 1–2 exposures/bin, 120–240 s integrated, 13–27% coverage.
30 min: — · 0 usable bins · 0 native points outside this binned view · insufficient support; 2–2 exposures/bin, 240–240 s integrated, 13–13% coverage.

Gaia 369222567317250944 · G 12.63

113/113 valid epochs · robust scatter 2.48% · median conditional error 1.75%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 2.66% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.94% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.85% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.70% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381289329476254720 · G 12.82

113/113 valid epochs · robust scatter 1.75% · median conditional error 1.41%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.03% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.10% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 0.86% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.96% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381409966516376960 · G 12.87

113/113 valid epochs · robust scatter 1.60% · median conditional error 1.60%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 0.94% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.07% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 0.80% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.50% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381214498262497920 · G 13.05

113/113 valid epochs · robust scatter 2.01% · median conditional error 1.97%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.38% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.38% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.26% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.76% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381191580317044992 · G 13.13

113/113 valid epochs · robust scatter 1.76% · median conditional error 1.50%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.07% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.79% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 0.61% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.43% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 369225904510499584 · G 13.15

113/113 valid epochs · robust scatter 1.90% · median conditional error 1.60%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.11% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.99% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.07% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.22% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 375280365287429376 · G 13.15

113/113 valid epochs · robust scatter 2.24% · median conditional error 1.54%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.96% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.01% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.13% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.94% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 369127395139218560 · G 13.18

113/113 valid epochs · robust scatter 2.69% · median conditional error 2.31%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.48% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.82% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 0.92% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 1.42% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 375287340314289664 · G 13.23

113/113 valid epochs · robust scatter 1.75% · median conditional error 1.63%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.65% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.48% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 0.66% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.52% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381344034481859072 · G 13.26

113/113 valid epochs · robust scatter 1.69% · median conditional error 1.65%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.14% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.83% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 0.50% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.40% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381152272776336640 · G 13.26

113/113 valid epochs · robust scatter 2.17% · median conditional error 1.87%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 2.18% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.71% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.13% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.38% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381165810513518720 · G 13.28

113/113 valid epochs · robust scatter 1.52% · median conditional error 1.84%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.33% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.81% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.26% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.74% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 369147804824163840 · G 13.28

113/113 valid epochs · robust scatter 1.55% · median conditional error 1.72%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.42% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.69% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.02% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.41% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 375226592296928384 · G 13.28

113/113 valid epochs · robust scatter 1.53% · median conditional error 1.68%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.05% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.63% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 0.84% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.44% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 369252739466052352 · G 13.30

113/113 valid epochs · robust scatter 2.50% · median conditional error 2.18%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 1.75% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 1.33% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.07% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.85% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Gaia 381220030180351360 · G 13.30

113/113 valid epochs · robust scatter 1.82% · median conditional error 1.74%. single-event diagnostics only.

Precision at common wall-clock intervals

5 min: 0.89% · 17 usable bins · 46 native points outside this binned view · descriptive only; 1–2 exposures/bin, 120–240 s integrated, 40–80% coverage.
10 min: 0.87% · 23 usable bins · 22 native points outside this binned view · conditional block interval; 1–4 exposures/bin, 120–480 s integrated, 20–80% coverage.
15 min: 1.09% · 18 usable bins · 14 native points outside this binned view · conditional block interval; 4–7 exposures/bin, 480–840 s integrated, 53–93% coverage.
30 min: 0.88% · 9 usable bins · 6 native points outside this binned view · descriptive only; 9–14 exposures/bin, 1080–1680 s integrated, 60–93% coverage.

Timing, uncertainty and applicability

Not calibrated standard magnitudes. Native G1+G2 response/Flat/pixel-phase and shared errors remain unbounded.
Recorded header start times support relative intervals; TIMESYS and clock accuracy are not established. No BJD_TDB.
References exclude each target but share sky/calibration systematics. Conditional errors hold median normalizations fixed.
No new search is run here. Existing event evidence and eligibility are retained; review scores are not calibrated false-alarm probabilities.
No new aperture is promoted. Mixed exposures, passbands, nights and calibration/angle segments stay separate.

Exact native-photometry diagnostics

Conditional errors, rates, source/reference IDs and precision support

Comparison-star evidence · experimental

Comparison-star robustness check

Could a more robust reference ensemble improve these light curves? This controlled experiment reuses the original native fluxes. Your published scientific curves and event results remain unchanged.

RGB · 120.0 s · 0 supported source/segment tests

Insufficient contiguous data or independent references for the blocked comparison.

7 contiguous blocks are too short; no test is forced across the gap.

1 contiguous blocks are too short; no test is forced across the gap.

Scientific baseline retained. No promotion from scatter alone; independent control observations and a calibrated uncertainty model are still required.

Validation design and limits

Blocked epoch checks within existing calibration/orientation segments, not independent new-night validation.
Stars share references and are not independent trials; no p-values or discovery probability are inferred.
Lower scatter may remove reference contamination but does not prove better physical accuracy.
Existing shared-master, flat, centroid, sampling and clock uncertainties remain unresolved.
Artificial dimming checks algebraic signal transfer only, not transit detection or recovery efficiency.
No re-fitting, smoothing or interpolation of target flux; gaps and unavailable measurements remain gaps.

Reference comparison evidence

Held-out folds, reference membership, unchanged baseline and signal-transfer checks

Example measured light curve

2026-10-18 · RGB · Gaia 369127395139218560. First available session and source ID; not selected for apparent variability.

Native G1+G2 measurements · separate calibration segments · no connecting lines.

All saved stellar light curves

2026-10-18 · RGB · Gaia 369127395139218560 · 117 valid epochs
2026-10-18 · RGB · Gaia 369147804824163840 · 117 valid epochs
2026-10-18 · RGB · Gaia 369222567317250944 · 117 valid epochs
2026-10-18 · RGB · Gaia 369225904510499584 · 117 valid epochs
2026-10-18 · RGB · Gaia 369252739466052352 · 117 valid epochs
2026-10-18 · RGB · Gaia 375226592296928384 · 117 valid epochs
2026-10-18 · RGB · Gaia 375280365287429376 · 117 valid epochs
2026-10-18 · RGB · Gaia 375287340314289664 · 117 valid epochs
2026-10-18 · RGB · Gaia 381152272776336640 · 117 valid epochs
2026-10-18 · RGB · Gaia 381165810513518720 · 117 valid epochs
2026-10-18 · RGB · Gaia 381191580317044992 · 117 valid epochs
2026-10-18 · RGB · Gaia 381214498262497920 · 117 valid epochs
2026-10-18 · RGB · Gaia 381220030180351360 · 117 valid epochs
2026-10-18 · RGB · Gaia 381289329476254720 · 117 valid epochs
2026-10-18 · RGB · Gaia 381344034481859072 · 117 valid epochs
2026-10-18 · RGB · Gaia 381409966516376960 · 117 valid epochs

Appendix · measurement methods & observing conditions

Observing nights and Moon

RGB

2026-10-18 23:05:49 CEST (UTC+0200) → 2026-10-19 04:25:52 CEST (UTC+0200)

53.1% Moon illumination · saved calculation

Altitude -23.4°Target separation —

Mitte des Aufnahmezeitraums

Original saved observation note

Time assumption: DATE-OBS interpreted as UTC because TIMESYS is missing. Astronomical context is provisional.

Original saved observation note

Moon altitude is approximate; local Earth-orientation data may be incomplete.

Original saved observation note

Geometric Moon altitude, without terrain or refraction; site elevation assumed to be 0 m.

Saved time assumptions are unchanged. Site and weather are shown on the session pages.

Explain this comparison

RGB · Star shape: 79/79 valid selected exposures; archive 82/82 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Stellar SNR: 79/79 valid selected exposures; archive 82/82 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Stellar SNR: 38/38 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Background: 38/38 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Star width (FWHM): 79/79 valid selected exposures; archive 82/82 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Background: 79/79 valid selected exposures; archive 82/82 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Star shape: 38/38 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Background scatter: 79/79 valid selected exposures; archive 82/82 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Star width (FWHM): 38/38 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

RGB · Background scatter: 38/38 valid selected exposures; archive 93/93 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.

Archive version ab3717b4ec376ea87d5261c94fe6dbbd42a97237e09422490b5844921d286006. This export is a frozen snapshot; it does not update without a new export.

All measurements and frozen archive comparison

Individual-frame quality review · advisory

Image-quality assistant

28 selected frames worth reviewing · 117/117 inputs have enough same-session support. All frames remain selected exactly as before.

Separate raw measurements, compared with the median of the same session and recorded setup. No overall score, automatic rejection or diagnosis.

Review suggestions · 28 frames

Saved header time / input ID	Measurement	This frame	Session median	Why review?
2026-10-18T21:05:49.263353 63e85f956928	Star width (FWHM)	3.374 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-18T21:39:22.527251 af1cd5eb8cae	Star width (FWHM)	3.248 sensor pixels	2.805	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-18T23:04:05.459491 50ce645ad5e9	Stellar SNR estimate	108.8 dimensionless	165.4	Lower model SNR in the sampled stars; changing star selection may contribute.
2026-10-18T23:16:40.589405 df5df540cd80	Stellar SNR estimate	108.1 dimensionless	165.4	Lower model SNR in the sampled stars; changing star selection may contribute.
2026-10-18T23:35:41.354702 be26a8ad62f8	Stellar SNR estimate	117 dimensionless	165.4	Lower model SNR in the sampled stars; changing star selection may contribute.
2026-10-19T01:13:23.278504 5b26209271a1	Star eccentricity	0.8103 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:13:23.278504 5b26209271a1	Star width (FWHM)	3.928 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:17:29.581067 84ad08ae9ed9	Star eccentricity	0.718 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:17:29.581067 84ad08ae9ed9	Star width (FWHM)	3.446 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:20:33.102930 c0610f3d7bd9	Star eccentricity	0.7395 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:20:33.102930 c0610f3d7bd9	Star width (FWHM)	3.393 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:22:36.240220 0437bbbd4107	Star width (FWHM)	2.919 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:24:39.415342 7044f5858c07	Star width (FWHM)	2.963 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:27:42.775147 6cf0ae217389	Star eccentricity	0.7483 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:27:42.775147 6cf0ae217389	Star width (FWHM)	3.396 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:29:45.877180 29ea0162ea52	Star eccentricity	0.7545 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:29:45.877180 29ea0162ea52	Star width (FWHM)	3.529 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:31:48.999634 fd478d97bfd6	Star eccentricity	0.7202 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:31:48.999634 fd478d97bfd6	Star width (FWHM)	3.528 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:34:52.433509 2e425932e1f4	Star eccentricity	0.8191 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:34:52.433509 2e425932e1f4	Star width (FWHM)	4.648 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:36:55.689135 e03e149459a2	Star eccentricity	0.8691 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:36:55.689135 e03e149459a2	Star width (FWHM)	4.464 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:38:58.831309 88c7aedda6b0	Star width (FWHM)	3.167 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:42:03.110609 b6e54e97b07a	Star eccentricity	0.8228 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:42:03.110609 b6e54e97b07a	Star width (FWHM)	4.019 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:44:06.365933 4657bbc4aeec	Star eccentricity	0.7528 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:44:06.365933 4657bbc4aeec	Star width (FWHM)	3.675 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:46:09.556912 1619130f43bf	Star eccentricity	0.7148 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:46:09.556912 1619130f43bf	Star width (FWHM)	3.436 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:49:13.772796 8400306ffd3f	Star eccentricity	0.8837 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:49:13.772796 8400306ffd3f	Star width (FWHM)	4.64 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:53:20.417213 637b09a44479	Star eccentricity	0.8614 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:53:20.417213 637b09a44479	Star width (FWHM)	4.473 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:56:24.461344 ab1874375942	Star eccentricity	0.805 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:56:24.461344 ab1874375942	Star width (FWHM)	3.873 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T01:58:27.541541 edd61be5962e	Star eccentricity	0.8049 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T01:58:27.541541 edd61be5962e	Star width (FWHM)	3.874 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T02:03:13.091642 5b1d85736453	Star eccentricity	0.7927 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T02:03:13.091642 5b1d85736453	Star width (FWHM)	3.572 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T02:05:16.319640 c140bb85c855	Star eccentricity	0.8838 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T02:05:16.319640 c140bb85c855	Star width (FWHM)	4.228 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T02:07:19.494471 33d5e7f53b1b	Star eccentricity	0.7433 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T02:07:19.494471 33d5e7f53b1b	Star width (FWHM)	3.431 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T02:09:30.651805 140407da3369	Star width (FWHM)	3.294 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.
2026-10-19T02:11:33.807570 2a060b99afad	Star eccentricity	0.7346 dimensionless	0.4556	More elongated than this session; inspect tracking and field position. This is not a guiding measurement.
2026-10-19T02:11:33.807570 2a060b99afad	Star width (FWHM)	3.558 sensor pixels	2.689	Broader than this session; inspect focus, tracking and sampling. The cause is not identified.

Method, coverage and limitations

RGB · 120.0 s · session acq_aed4feba: Background level 82/82; Background scatter 82/82; Detected sources 0/82: too few valid session frames; Star eccentricity 82/82; Star width (FWHM) 82/82; Stellar SNR estimate 82/82. Unknown: device_id, filter, optical_configuration, readout_mode, recorded_orientation_deg.

Method session-quality-assistant-1. Saved measurements and existing archive comparisons are unchanged.