Selected by you
RGB · 1 observing sessions in the archive
RGB · 5 h 00 min · 100 Lights
No saved catalogue overlay is qualified for this exact image; your image and science remain available.
The field guide is not qualified for this selected image; the saved science is retained.
Verified video for this exact saved image; depth is an illustrative display effect.
Saved per-exposure measurements; no universal quality score.
100 of 100 selected input exposures have cached histograms.
Measured curves in 0 of 1 saved image groups. Measurement availability does not establish a transit or a calibrated detection significance.
Each module is checked separately. An unavailable module does not invalidate the saved master; a complete list is not scientific certification.
Selected input exposures
Selected inputs against your whole archive · RGB and DNB remain separate.
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
Selected input exposures
Measurements of the selected input exposures, not the finished master.
180.0 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 · 2026-11-06–2026-11-07 · recorded DATE-OBS
Execution version was not saved: this comparison is limited to the same observing session.
Provisional star fits · stellar SNR is a model estimate, not master SNR.
Provisional stellar models: undersampled stars can bias the measurements. Differences are not quality grades. Stellar SNR is not nebular or master-image SNR.
RGB · 5 h 00 min · 100 Lights
Planning · model estimate
Based on the actual inputs of this selected master. RGB and DNB are modelled separately.
Current relative SNR = 1.00×. This is a reference level, not a measured master SNR. There is no universal “good” SNR target: it depends on the feature, aperture or region, noise definition and intended use.
5 h 00 min · 100 selected Lights. Sub-exposures: 180 s
One more comparable hour: about 9.5% higher SNR relative to now. Each following hour adds less relative benefit; it does not become useless.
| Relative SNR goal | Additional time | Total time |
|---|---|---|
| 1.25× | 2 h 48 min 45 s | 7 h 48 min 45 s |
| 1.50× | 6 h 15 min | 11 h 15 min |
| 2.00× | 15 h 00 min | 20 h 00 min |
Detail visibility is not angular resolution. More integration can reveal fainter structures. Seeing, optics, sampling, focus and guiding limit sharpness; this curve does not predict smaller or rounder stars.
Same target region, filter, camera, sub-exposure mix, throughput and sky conditions; independent random noise and comparable stacking weights. Fixed-pattern noise, calibration errors, gradients, correlated noise, changing conditions and rejected data can reduce the realised gain. Total exposure is not an effective per-pixel weight or an HDR-core coverage map.
Relative SNR = √((current time + additional time) / current time). Required extra time = current time × (goal² − 1). No numerical floor or absolute master SNR has been fitted; no per-frame star-SNR median is substituted.
Time means usable integration in the stack, excluding overheads, rejected frames and nights with unsuitable conditions. The curve is a planning scenario, not a measured progress history.
Image geometry is not sufficiently verified, or the exact catalogue is not yet saved.
Experimental photometry · no confirmed transit. 0 unresolved technical review items.
RGB · 100/100 original exposures measured.
ADU · decoded digital value · Pixel count per bin; not a wavelength spectrum.
All saved bins, including negative values.
8-bit display values · nonlinear · Pixel count per bin; not a wavelength spectrum.
All saved bins, including negative values.
Not measured
0 unresolved technical review items · 0 Gaia IDs searched · 0 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.
Not measured for this scope. Use the manual Review → Measure action once native exposures, calibration and geometry are qualified.
2026-11-07 00:01:23 CET (UTC+0100) → 2026-11-07 05:43:43 CET (UTC+0100)
5.1% Moon illumination · saved calculation
Altitude -20.0°Target separation —Mitte des Aufnahmezeitraums
Time assumption: DATE-OBS interpreted as UTC because TIMESYS is missing. Astronomical context is provisional.
Moon altitude is approximate; local Earth-orientation data may be incomplete.
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.
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 · Background: 100/100 valid selected exposures; archive 100/100 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.
RGB · Stellar SNR: 100/100 valid selected exposures; archive 100/100 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.
RGB · Star shape: 100/100 valid selected exposures; archive 100/100 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.
RGB · Background scatter: 100/100 valid selected exposures; archive 100/100 frames, 1 Sessions. Unknown properties: device_id, readout_mode, optical_configuration, filter, execution_method_version.
RGB · Star width (FWHM): 100/100 valid selected exposures; archive 100/100 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
13 selected frames worth reviewing · 100/100 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.
| Saved header time / input ID | Measurement | This frame | Session median | Why review? |
|---|---|---|---|---|
| 2026-11-07T04:03:21.074938 e2c352218622 | Background scatter | 50.42 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:06:24.148184 afb7e2abb780 | Background level | 1099 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:06:24.148184 afb7e2abb780 | Background scatter | 50.78 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:09:27.365456 66af34dc2d27 | Background level | 1104 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:09:27.365456 66af34dc2d27 | Background scatter | 50.78 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:12:37.966905 88b33e2ba366 | Background level | 1114 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:12:37.966905 88b33e2ba366 | Background scatter | 51.47 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:15:41.025760 6b5187def917 | Background level | 1128 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:15:41.025760 6b5187def917 | Background scatter | 51.94 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:18:44.094967 481353af8aeb | Background level | 1145 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:18:44.094967 481353af8aeb | Background scatter | 52.79 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:21:57.809820 563232d3af91 | Background level | 1173 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:21:57.809820 563232d3af91 | Background scatter | 54.2 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:25:01.053471 bcdf0e13b428 | Background level | 1212 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:25:01.053471 bcdf0e13b428 | Background scatter | 56.1 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:28:04.265443 f667a214f74d | Background level | 1273 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:28:04.265443 f667a214f74d | Background scatter | 58.13 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:31:23.695052 5873d2de2af6 | Background level | 1372 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:31:23.695052 5873d2de2af6 | Background scatter | 60.74 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:34:26.913562 19b435e1f433 | Background level | 1517 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:34:26.913562 19b435e1f433 | Background scatter | 65.54 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:37:30.095275 4fb1cf68589b | Background level | 1749 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:37:30.095275 4fb1cf68589b | Background scatter | 74.18 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
| 2026-11-07T04:40:43.558076 d53d1d365f64 | Background level | 2128 ADU | 946 | Different background level; sky, gradients and real field emission can all contribute. |
| 2026-11-07T04:40:43.558076 d53d1d365f64 | Background scatter | 84.2 ADU | 43.15 | Higher saved background scatter; this is not pure detector noise. |
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 · 180.0 s · session acq_c5664bad: Background level 100/100; Background scatter 100/100; Detected sources 0/100: too few valid session frames; Star eccentricity 100/100; Star width (FWHM) 100/100; Stellar SNR estimate 100/100. Unknown: device_id, filter, optical_configuration, readout_mode, recorded_orientation_deg.
Method session-quality-assistant-1. Saved measurements and existing archive comparisons are unchanged.
