Understand the terms
Star width
Meaning: FWHM is the width of the stellar image at half maximum. It includes focus, optics and sampling, not only atmospheric seeing.
Recorded implementation: Elliptical Gaussian: 2.354820045 × √(σ₁σ₂). Multiply green-grid widths by 2 for original sensor pixels. The fitted σ values are widths, not error bars.
Population and aggregation: Median of 5–60 accepted stellar fits per raw exposure. Older object reports used the median of exposure medians; current quality cards use the explicitly documented session-balanced archive means.
Units and coordinates: original sensor pixels
Interpretation: Compare similar fields and settings. Narrower fitted stars are not automatically better for undersampled photometry.
Limitations: Close neighbours, focus and pixel phase can bias fits. No seeing measurement in arcseconds is claimed.
Field: median_fwhm_original_px
Method and provenance
baseline/v12/light_quality.py · fit_star; measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Star shape · Bayer green grids and pixel phase · Median
Optional primary documentation (Internet)
https://photutils.readthedocs.io/en/stable/user_guide/aperture.html
Star shape
Meaning: Near zero means a round fitted model; larger values mean more elongation. This is not a direct guiding error.
Recorded implementation: e = √(1 − (σ_minor/σ_major)²). This is eccentricity, not the axis ratio or Siril roundness.
Population and aggregation: Median of the same accepted Gaussian fits used for FWHM
Units and coordinates: dimensionless, 0 to <1
Interpretation: Compare similar acquisitions; the number does not explain the cause.
Limitations: Undersampling, optical aberrations and neighbours can bias the shape.
Field: median_eccentricity
Method and provenance
baseline/v12/light_quality.py · fit_star; measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Star width · Geometric registration
Optional primary documentation (Internet)
Stellar model SNR
Meaning: Stellar signal divided by its modelled uncertainty; not nebular or whole-image SNR.
Recorded implementation: SNR = F / √(F/g + n·v + n²·v/m), with g=EGAIN in e⁻/ADU, n aperture pixels and m retained sky pixels. Radius 3, sky annulus 5–7 in the selected sampling grid.
Population and aggregation: Median valid SNR from at least 5 accepted stars; at most 60 fits per exposure
Units and coordinates: dimensionless, not a percentage
Interpretation: Higher means more signal relative to this model error for these selected stars. Stars are selected anew in each exposure.
Limitations: Missing valid EGAIN or fewer than 5 SNR estimates gives no value. Shared calibration errors and other systematics are not fully represented.
Field: median_star_snr
Method and provenance
baseline/v12/light_quality.py · aperture_snr; measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Quality-SNR aperture · Modelled uncertainty · Camera gain
Optional primary documentation (Internet)
https://photutils.readthedocs.io/en/stable/user_guide/aperture.html
Background level
Meaning: Typical digital background in the raw image, not physically calibrated sky brightness.
Recorded implementation: Astropy sigma_clipped_stats, sigma=3, at most 5 iterations. Bayer data use one green position, not an RGB sum.
Population and aggregation: Sigma-clipped median on image[::4,::4] of the selected green grid
Units and coordinates: raw-image ADU
Interpretation: Compare compatible exposures, filters, gain and fields.
Limitations: Nebular emission, gradients and electronic offset contribute. Lower is not automatically better.
Field: background_adu
Method and provenance
baseline/v12/light_quality.py · measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Background scatter · Median · Digital image values
Optional primary documentation (Internet)
Background scatter
Meaning: Spread of background pixel values, not the complete uncertainty of a stellar measurement.
Recorded implementation: sigma_clipped_stats returns the standard deviation of retained values; this is not MAD.
Population and aggregation: Standard deviation after sigma clipping of the same background sample
Units and coordinates: ADU
Interpretation: For matching settings, greater scatter can indicate noise or structure.
Limitations: Real nebular structure and gradients may contribute; this is not an independent read-noise measurement.
Field: background_noise_adu
Method and provenance
baseline/v12/light_quality.py · measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Standard deviation · Background level
Optional primary documentation (Internet)
Detected sources
Meaning: Number found by source detection; not all are used for stellar shape measurements.
Recorded implementation: DAOStarFinder initial FWHM 2.5 sampling pixels, threshold 7 × background scatter, excluding the image edge.
Population and aggregation: DAOStarFinder detections before fit selection
Units and coordinates: count
Interpretation: Compare the same field under similar conditions.
Limitations: Depends on filter, brightness, nebulosity and threshold; not a universal quality grade.
Field: detected_sources
Method and provenance
baseline/v12/light_quality.py · measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Accepted stellar fits · Stars used for SNR
Optional primary documentation (Internet)
Accepted stellar fits
Meaning: Stars passing fit and selection checks; no more than the number detected.
Recorded implementation: At most 60 fits; nearest detection at least 12 sampling pixels away; fit bounds and relative residual checked. Fewer than 5 gives no shape median.
Population and aggregation: Isolated candidates away from edges and the digital maximum
Units and coordinates: count
Interpretation: Few fits limit the representativeness of an exposure median.
Limitations: Successful fitting does not establish astrophysical accuracy.
Field: fitted_stars
Method and provenance
baseline/v12/light_quality.py · measure; fit_star · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Detected sources · Star width
Optional primary documentation (Internet)
Stars used for SNR
Meaning: Number entering the SNR median, not all stars in the image.
Recorded implementation: Positive flux, valid gain and sufficient sky sample; at least 5 estimates for a median.
Population and aggregation: Subset of accepted fits with valid SNR
Units and coordinates: count
Interpretation: Read together with the SNR trend.
Limitations: Changing the selected stars can change the SNR trend.
Field: snr_stars
Method and provenance
baseline/v12/light_quality.py · measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Stellar model SNR · Detected sources
Optional primary documentation (Internet)
Digital endpoints
Meaning: Pixels at the digital minimum or maximum; not a calibrated full-well or linearity test.
Recorded implementation: Raw unsigned 16-bit histograms count codes 0 and 65535. Quality measurements count the stored integer type maximum.
Population and aggregation: Aggregated raw pixels by Bayer channel; separately, the quality-module fraction at the integer maximum
Units and coordinates: percent of the relevant channel pixels
Interpretation: Large endpoint fractions suggest inspection, not automatic rejection.
Limitations: Sensor saturation can occur below 65535. Display clipping is a separate quantity.
Field: zero_percent; maximum_code_percent
Method and provenance
baseline/v12/histogram_analysis.py · summarize; generate · source_sha256
SHA-256: dafb28cb74c92aee431e65cd20784536edf3ee1453e5d6ccfe58fcff1e62c894
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Raw Bayer-channel histogram · Master and display previews · Digital image values
Optional primary documentation (Internet)
Median
Meaning: Middle value of a sorted sample; different from the arithmetic mean.
Recorded implementation: Raw histograms use the first digital code whose cumulative count reaches ceil(0.5·N), without interpolation. Quality measurements use numpy.median.
Population and aggregation: All counted channel pixels for raw histograms; accepted stars for quality medians
Units and coordinates: unit of the measured quantity
Interpretation: Check whether pixels, stars or exposure medians are being summarized.
Limitations: Robustness to outliers does not remove systematic errors.
Field: median_adu
Method and provenance
baseline/v12/histogram_analysis.py · summarize · source_sha256
SHA-256: dafb28cb74c92aee431e65cd20784536edf3ee1453e5d6ccfe58fcff1e62c894
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Percentiles · Robust scatter
Optional primary documentation (Internet)
Robust scatter
Meaning: Median absolute deviation; the scaling convention must be stated.
Recorded implementation: Hybrid scaling evidence: 1.4826 × median(|ratio − median|) / median. Other V1.2 diagnostics need not use the same definition.
Population and aggregation: Matched stellar-signal ratios for scaling a visual hybrid
Units and coordinates: dimensionless relative to the median
Interpretation: The 1.4826 convention approximates a standard deviation for Gaussian samples.
Limitations: A robust distance is not a Gaussian significance value or a new test.
Field: comparison_scale.relative_mad
Method and provenance
source/master_alignment.py · pair · wcs-master-alignment-1
SHA-256: ebd90f1ea20b7780d2efbe18d5a77c0248498192ab8c8d9192664251e39ff372
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Median · Visual RGB+DNB composition
Optional primary documentation (Internet)
Percentiles
Meaning: The 1st–99th percentiles bound approximately the central 98% of values; values outside can still be valid.
Recorded implementation: Histograms use the inverse empirical distribution without interpolation; astrometric percentiles instead summarize stellar distances.
Population and aggregation: Pixels aggregated by Bayer channel
Units and coordinates: ADU for histograms; residuals keep their own unit
Interpretation: Do not confuse these with the minimum and maximum.
Limitations: Display limits do not delete master values.
Field: p01_adu; p99_adu
Method and provenance
baseline/v12/histogram_analysis.py · summarize · source_sha256
SHA-256: dafb28cb74c92aee431e65cd20784536edf3ee1453e5d6ccfe58fcff1e62c894
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Raw Bayer-channel histogram · Linear-master histogram
Optional primary documentation (Internet)
Standard deviation
Meaning: Spread about the mean; sensitive to outliers.
Recorded implementation: Background uses Astropy clipping and standard deviation. The historical light-curve RMS table uses ddof=1.
Population and aggregation: The sample explicitly named in the surrounding report
Units and coordinates: unit of the values
Interpretation: Compare matching definitions and populations.
Limitations: Not automatically a measurement error or significance.
Field: background_noise_adu
Method and provenance
baseline/v12/light_quality.py · measure · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Relative light-curve scatter · Background scatter
Optional primary documentation (Internet)
Relative light-curve scatter
Meaning: The historical RMS label here actually denotes relative sample standard deviation. It is not an error bar or transit statistic.
Recorded implementation: numpy.std(y/weighted_mean, ddof=1), displayed ×100. This is sample SD despite the short RMS label.
Population and aggregation: Valid points for a tested star within one orientation group
Units and coordinates: percent
Interpretation: Scatter may be astrophysical or instrumental.
Limitations: Other modules can define RMS differently. This is not RMS about zero or validated variability.
Field: rms_fraction × 100
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · analyse · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Conditional constancy test · Modelled uncertainty
Optional primary documentation (Internet)
https://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.chi2.html
Coverage and gaps
Meaning: Missing values are not zeros. Gaps are retained, not filled.
Recorded implementation: Legacy preselection: at least max(8,ceil(0.8·group_frames)) valid fluxes. A tested curve needs at least 8 points and 4 available references per point.
Population and aggregation: Per star, separated by orientation group
Units and coordinates: frame count or fraction
Interpretation: The historical Frames column counts used curve points, not all acquired Lights.
Limitations: High coverage does not prove correct calibration or constant brightness.
Field: frames; registrations; missing flux
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · analyse · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Comparison-star ensemble · Reading status
Optional primary documentation (Internet)
Photometric aperture
Meaning: Signal is summed in a circle and the local background subtracted. The extraction remains experimental.
Recorded implementation: Legacy photometry uses pixel centres at radius ≤4 G1 pixels, without fractional-overlap weights; geometrically 8 original RGGB pixels.
Population and aggregation: Tracked star on a calibrated G1 grid
Units and coordinates: ADU sum; radius in green-grid pixels
Interpretation: Choose a definition appropriate to the star and neighbours.
Limitations: Different from the quality-SNR radius of 3. Pixel phase and undersampling can modulate flux.
Field: flux
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · aperture · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Local sky annulus · Bayer green grids and pixel phase · Measured stellar signal
Optional primary documentation (Internet)
https://photutils.readthedocs.io/en/stable/user_guide/aperture.html
Quality-SNR aperture
Meaning: Quality SNR and experimental light curves use different apertures.
Recorded implementation: Radius 3 sampling pixels, sky annulus 5–7; sigma_clip 3, at most 5 iterations, at least 20 sky pixels.
Population and aggregation: Uncalibrated stellar stamps in the quality module
Units and coordinates: radius 3 sampling pixels; sky annulus 5–7
Interpretation: Bayer-grid spacing is two sensor pixels.
Limitations: Does not measure nebular SNR.
Field: median_star_snr
Method and provenance
baseline/v12/light_quality.py · aperture_snr · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Photometric aperture · Stellar model SNR
Optional primary documentation (Internet)
https://photutils.readthedocs.io/en/stable/user_guide/aperture.html
Local sky annulus
Meaning: Background is estimated around the star; neighbours and nebulosity can bias it.
Recorded implementation: Legacy: 7≤r≤11, 3σ clipping for at most 4 iterations, at least 70 retained pixels; mean and sample variance with ddof=1.
Population and aggregation: Sky pixels around a photometric target
Units and coordinates: G1 radii 7–11; background in ADU
Interpretation: For RGGB, radii correspond to 14–22 original pixels.
Limitations: Clipping does not fully correct structured backgrounds.
Field: sky; flux; error
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · aperture · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Photometric aperture · Modelled uncertainty
Optional primary documentation (Internet)
https://photutils.readthedocs.io/en/stable/user_guide/aperture.html
Measured stellar signal
Meaning: Digital signal sum, not physically calibrated radiant flux.
Recorded implementation: Sum of calibrated aperture pixels minus aperture-pixel count × mean local sky.
Population and aggregation: One star per usable exposure
Units and coordinates: ADU sum after calibration and sky subtraction
Interpretation: Compare the same extraction and calibration definitions.
Limitations: Blends, flat errors and pixel phase can bias the result.
Field: flux
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · aperture · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Photometric aperture · Relative stellar brightness
Optional primary documentation (Internet)
https://photutils.readthedocs.io/en/stable/user_guide/aperture.html
Relative stellar brightness
Meaning: Brightness relative to comparison stars. A deviation is a measurement anomaly first, not a transit detection.
Recorded implementation: Each star is divided by its temporal median; the target is then divided by the mean of available normalized references. Separate groups are not joined.
Population and aggregation: One target relative to its fixed comparison ensemble within a segment
Units and coordinates: dimensionless, approximately around 1
Interpretation: The line at 1 is a normalization reference, not a fitted transit model.
Limitations: Common trends can be suppressed; variable references can distort other curves.
Field: relative_flux
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · analyse · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Comparison-star ensemble · Conditional constancy test · Bayer green grids and pixel phase
Optional primary documentation (Internet)
Comparison-star ensemble
Meaning: A common brightness reference; catalogue data do not establish its stability here.
Recorded implementation: Legacy after coverage preselection: even indices are references, odd indices targets; arithmetic mean of available normalized references. The control compares two disjoint subpools with at least two stars each.
Population and aggregation: Fixed reference pool disjoint from targets; controls split it into two subpools
Units and coordinates: dimensionless means; control scatter in percent
Interpretation: Control scatter exceeding model errors cautions against small target p-values.
Limitations: Not an independent planet test; shared systematics remain possible.
Field: comparison; split_reference_rms_percent
Method and provenance
baseline/v12/photometry_controls.py · generate; differential_photometry.analyse · source_sha256
SHA-256: 91937d386b9cc69475b08e5643d1e8cfa844e81481253a996c6e578e5f0a2259
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Relative stellar brightness · Modelled uncertainty · Reference-selection sensitivity
Optional primary documentation (Internet)
Modelled uncertainty
Meaning: Error bars describe the selected noise model, not every error source. Results remain experimental.
Recorded implementation: Aperture variance F/g+n·v+n²·v/m, followed by quadrature propagation of independent relative target and ensemble errors.
Population and aggregation: Each target measurement including propagated reference uncertainty
Units and coordinates: relative flux; historical table in percent
Interpretation: Not the scatter of all stars or a guarantee of actual interval coverage.
Limitations: Shared masters, correlations, centring, undersampling and other systematics are partly omitted.
Field: model_error
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · aperture; analyse · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Stellar model SNR · Conditional constancy test · Time-correlated scatter
Optional primary documentation (Internet)
https://photutils.readthedocs.io/en/stable/user_guide/aperture.html
Bayer green grids and pixel phase
Meaning: G1 and G2 occupy different sensor positions; they are not the same sample or an interpolated full image.
Recorded implementation: Legacy photometry uses G1 only. A G1 centre (x,y) corresponds to original (2x+1,2y). Current native G1+G2 work is explicitly labelled separately.
Population and aggregation: RGGB G1; G2 at raw[1::2,0::2]
Units and coordinates: G1 spacing: 2 sensor pixels; origin (x,y)=(1,0)
Interpretation: FWHM is converted back to original pixels; legacy aperture radii remain green-grid pixels.
Limitations: Narrow stars change G1 sampling with subpixel position. Separate simulations describe this effect; historical measurements were not retrospectively corrected.
Field: raw[0::2,1::2]
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · plane · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Star width · Photometric aperture
Optional primary documentation (Internet)
Conditional constancy test
Meaning: A small p-value conflicts with the assumed constant-flux/error model; it is not a probability of a planet or real variability.
Recorded implementation: χ² = Σ((y−weighted_mean)/dy)², N−1 degrees of freedom; scipy.stats.chi2.sf. Requires correct independent Gaussian errors.
Population and aggregation: Each tested star and orientation group
Units and coordinates: dimensionless, 0 to 1
Interpretation: Conditional on these assumptions; not a periodic or transit-window test.
Limitations: Correlations, references and calibration errors can invalidate the value. A large p-value does not prove constancy.
Field: p_independent_gaussian; chi2; dof
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · analyse · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Multiple-test correction · Modelled uncertainty · Time-correlated scatter
Optional primary documentation (Internet)
https://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.chi2.html
Multiple-test correction
Meaning: Holm accounts for multiple tested stars, but cannot repair an incorrect noise model.
Recorded implementation: Sort p-values, take the cumulative maximum of (m−zero_based_rank)·p, cap at 1, then restore original order.
Population and aggregation: All tested stars in that run across orientation groups
Units and coordinates: dimensionless
Interpretation: The test family is this run, not every past or future search.
Limitations: Invalid input p-values remain invalid; no planet proof.
Field: p_holm_all_tested_stars
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · holm; analyse · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Conditional constancy test
Optional primary documentation (Internet)
https://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.chi2.html
Time-correlated scatter
Meaning: Neighbouring measurements may share errors and provide less information than independent points.
Recorded implementation: V1.1 diagnostic: bins of 2,3,5,8 points, at least 4 bins; do not bridge gaps >1.8× median cadence. β compares scatter with white-noise expectation; lag1 uses suitable neighbouring pairs.
Population and aggregation: Optional V1.1 evidence audit, when separately recorded
Units and coordinates: dimensionless β or correlation
Interpretation: β>1 is descriptive; audit thresholds are heuristic review aids.
Limitations: No new β extraction is added to linked historical reports. No empirical recalibration of their p-values.
Field: lag1; beta_max
Method and provenance
baseline/v12/evidence_audit.py · temporal_diagnostics · 1.1
SHA-256: 9ccb19178187345cafd1fc0ebd2db15634118a248ab8863dbb8414f5274c37ef
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Conditional constancy test · Correlation
Optional primary documentation (Internet)
https://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.chi2.html
Reference-selection sensitivity
Meaning: Remove one reference star at a time and examine changes in the target curve.
Recorded implementation: The audit compares alternative normalized curves with the baseline and takes the largest scatter change.
Population and aggregation: Optional V1.1 evidence audit
Units and coordinates: percent
Interpretation: Large changes indicate sensitivity to reference selection, not its cause.
Limitations: No new control measurements here; target and reference pools remain separate.
Field: max_reference_removal_change_percent
Method and provenance
baseline/v12/evidence_audit.py · generate; reference_controls · 1.1
SHA-256: 9ccb19178187345cafd1fc0ebd2db15634118a248ab8863dbb8414f5274c37ef
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Comparison-star ensemble · Time-correlated scatter
Optional primary documentation (Internet)
Correlation
Meaning: Describes a shared trend, not its cause.
Recorded implementation: Evidence-audit quality associations use Spearman rank correlation; lag1 uses Pearson correlation of neighbouring valid measurements.
Population and aggregation: Optional flux/quality associations or temporal neighbouring points
Units and coordinates: −1 to +1
Interpretation: These statistics differ; no correlation p-values are calculated here.
Limitations: Multiple quality variables and temporal dependence limit interpretation.
Field: strongest_quality_rho; lag1
Method and provenance
baseline/v12/evidence_audit.py · generate; temporal_diagnostics · 1.1
SHA-256: 9ccb19178187345cafd1fc0ebd2db15634118a248ab8863dbb8414f5274c37ef
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Time-correlated scatter
Optional primary documentation (Internet)
https://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.chi2.html
Calibration frames and masters
Meaning: Lights record the target; Darks record dark signal; Bias records readout offset; Flats measure relative response. Masters combine selected exposures.
Recorded implementation: Field Alpha uses mean masters. Light=(raw Light−master Dark)/master Flat. Dark already contains bias: no second bias subtraction from Lights. Flats are bias-subtracted and median-normalized separately by Bayer phase.
Population and aggregation: Exact frame members selected by the authoritative plan
Units and coordinates: ADU; normalized flat is dimensionless
Interpretation: Read the exact member identities in the plan and lineage.
Limitations: Mean combination and nominal metadata compatibility do not provide a complete uncertainty model.
Field: selected_dark_ids; selected_flat_ids; lineage
Method and provenance
source/full_cfa_calibration.py · MasterSet.build; MasterSet.calibrate · field-full-cfa-phase-mean-1
SHA-256: c8d0f197c5e03ed46932d141f5e6d21e0936dbf6ec278a408892500a5f43a680
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Candidates versus selected calibration · Scientific masks and cosmetic correction · Pointing and camera orientation
Optional primary documentation (Internet)
Candidates versus selected calibration
Meaning: A compatible candidate list is not an applied calibration; exact selection belongs to the processing plan.
Recorded implementation: Legacy reports list Dark/Bias candidates; exclusion counts are Light–calibration pairs. Field Alpha uses the authoritative plan.
Population and aggregation: Legacy: each Light versus each library frame; current plan: explicit selected IDs
Units and coordinates: pair comparisons or file counts
Interpretation: One file may appear in many pairs.
Limitations: Legacy photometry selected independently; its candidate counts cannot establish exact master membership.
Field: calibration_comparison.csv; selected_*_ids
Method and provenance
baseline/v12/baseline/v11_source/calibration_matcher_v02.py · reasons; main · legacy_v11
SHA-256: 12fe7c9335aead4b3623a66e3c6340049be02b18e615a11795f3c6538d8d298b
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Calibration frames and masters · Known, unknown or incompatible
Optional primary documentation (Internet)
Known, unknown or incompatible
Meaning: Missing metadata are unknown, not automatically compatible. Incompatible means recorded evidence contradicts the rules.
Recorded implementation: Qualification combines headers, explicit operator confirmation and planned members. Delayed/reconstructed Flats require exact scoped diagnostics and a provisional operator decision; unknowns remain explicit.
Population and aggregation: Each input group and configuration receipt
Units and coordinates: state
Interpretation: A camera model name is not a unique device ID.
Limitations: No fabricated filter, device or readout-mode confirmation.
Field: qualification_state; warnings
Method and provenance
source/session_preflight.py · qualify · new-session-qualification-1
SHA-256: 39e58eba2df145b0e4f6f68b0c957a9ed49e8da5c61986b5fc575f696d55c784
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Calibration frames and masters · Reading status
Optional primary documentation (Internet)
Pointing and camera orientation
Meaning: A header angle does not prove camera rotation relative to the optics; a meridian flip can change image orientation.
Recorded implementation: Current flat selection uses confirmed physical orientation; historical photometry grouped by header ROTATOR.
Population and aggregation: Header angle versus confirmed camera-to-optics orientation
Units and coordinates: degrees or explicit state
Interpretation: An old orientation group is a technical segment.
Limitations: Unknown mechanical continuity stays unknown; do not infer it from target coordinates.
Field: physical_orientation_status; ROTATOR
Method and provenance
baseline/v12/orientation_candidate/source/orientation_semantics.py · observer_context · physical-orientation-evidence-1
SHA-256: 343cfc19c707c25d72f4f66ca6a3d9a447ec4885fcd5367aec651846456889d6
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Calibration frames and masters · Geometric registration
Optional primary documentation (Internet)
Scientific masks and cosmetic correction
Meaning: Invalid scientific pixels remain masked. Only the separate imaging branch may use the validated cosmetic treatment.
Recorded implementation: The supported single defect is recorded explicitly; this is not general automatic defect detection.
Population and aggregation: Qualified calibration domain
Units and coordinates: valid/invalid per sensor pixel
Interpretation: Filled display pixels are not recovered scientific measurements.
Limitations: Clean inputs or narrowly validated mask geometry are required; other cases need review.
Field: mask_path; scientific_path; imaging_path
Method and provenance
source/full_cfa_calibration.py · MasterSet.calibrate · field-full-cfa-phase-mean-1
SHA-256: c8d0f197c5e03ed46932d141f5e6d21e0936dbf6ec278a408892500a5f43a680
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Reading status · Calibration frames and masters
Optional primary documentation (Internet)
Geometric registration
Meaning: Aligns stellar positions; geometric agreement alone does not validate photometry.
Recorded implementation: Saved transforms and the chosen reference define the output geometry; failures remain recorded. Exposure-class totals pin an original reference; the legacy per-session reference selection remains available. Transform/crop receipts do not certify a new WCS.
Population and aggregation: Frames in a compatible processing group
Units and coordinates: pixels of the relevant reference grid
Interpretation: Compare residuals only in matching coordinate units.
Limitations: Siril stack registration, legacy green-grid association and RGB/DNB master alignment are different stages.
Field: geometry.registration; homography
Method and provenance
source/image_stack.py · register_stack · field-siril-linear-stack-3
SHA-256: f992a8428a80d5cfe588f9c6259a6e83ba8f13b489f329409a0b3547fb4f9b73
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition checked against the current selected source. Historical results retain their original execution receipts; this definition hash does not relabel their scientific processing.
Related terms: Remaining position residual · Common field coverage · Image coordinates on the sky
Optional primary documentation (Internet)
Remaining position residual
Meaning: Offsets describe how independent stars agree after alignment.
Recorded implementation: TAN-WCS mapping plus affine centroid correction. Geometric gates and spatial coverage are recorded.
Population and aggregation: Held-out stars not used to fit the affine correction
Units and coordinates: RGB master pixels
Interpretation: Small residuals help only with adequate field coverage.
Limitations: Not an arcsecond scale or physical RGB/DNB flux calibration.
Field: heldout residuals; median_px; p90_px; max_px
Method and provenance
source/master_alignment.py · pair; metrics · wcs-master-alignment-1
SHA-256: ebd90f1ea20b7780d2efbe18d5a77c0248498192ab8c8d9192664251e39ff372
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Geometric registration · Visual RGB+DNB composition · Image coordinates on the sky
Optional primary documentation (Internet)
Common field coverage
Meaning: Keeps the field geometrically covered by all included registered exposures.
Recorded implementation: Conservative centred rectangle; limits and responsible transforms remain visible.
Population and aggregation: Geometric intersection of included transforms
Units and coordinates: percent of original area; reference pixels
Interpretation: Smaller area is not automatically better. No frame was discarded merely to increase the crop.
Limitations: Geometric coverage is not an exact post-rejection per-pixel contribution count.
Field: crop.area_fraction; crop bounds
Method and provenance
code/help_definition_sources/084f212fe3d7e0624ff430c88715630a991382030006bb20c6081e53a7e5347b/object_library.py · footprint · object-library-new-night-5
SHA-256: 084f212fe3d7e0624ff430c88715630a991382030006bb20c6081e53a7e5347b
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition retained from exact archived source hash. Current overview renderer is a separate presentation adapter.
Related terms: Geometric registration · Stack and integration time
Optional primary documentation (Internet)
Stack and integration time
Meaning: Combines selected registered exposures. Integration time is their summed exposure duration.
Recorded implementation: RGB and DNB are counted separately. A collection of session masters is not by itself a recomputed multnight master; actual combined products have separate membership receipts.
Population and aggregation: Accepted stack members; object totals deduplicated by content hash within mode
Units and coordinates: count; seconds or hours
Interpretation: Read selected-image inputs separately from all available data.
Limitations: More exposure time alone does not guarantee better scientific results.
Field: stacked_count; integration_s; accepted_frames
Method and provenance
code/help_definition_sources/084f212fe3d7e0624ff430c88715630a991382030006bb20c6081e53a7e5347b/object_library.py · group_record; update · object-library-new-night-5
SHA-256: 084f212fe3d7e0624ff430c88715630a991382030006bb20c6081e53a7e5347b
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition retained from exact archived source hash. Current overview renderer is a separate presentation adapter.
Related terms: Master and display previews · Common field coverage
Optional primary documentation (Internet)
Master and display previews
Meaning: A linear master preserves processed numerical values; a preview reveals faint structure without changing saved scientific measurements.
Recorded implementation: Historical Safe/Enhanced previews use saved limits, asinh stretching and one sRGB transfer. Current finishing recipes separately record their actual operators. No new noise measurement is implied.
Population and aggregation: Accepted master and its saved display derivatives
Units and coordinates: master: relative linear units; preview: sRGB display
Interpretation: Display brightness and contrast do not establish improved scientific SNR.
Limitations: Colours are approximate, not photometrically calibrated; normalized stacks are not claimed to retain an absolute raw-ADU scale.
Field: recipe; output_hashes; source
Method and provenance
source/enhanced_preview.py · render · linked-asinh-srgb-2
SHA-256: 95db5d026578390cdf0d92f4b82679b740f57666040d2e9c533c769d2d3fd7aa
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Visual RGB+DNB composition · HOO channel approximation · Digital endpoints
Optional primary documentation (Internet)
HOO channel approximation
Meaning: A labelled channel approximation, not separately measured Hα and OIII line fluxes.
Recorded implementation: R stays R; both G and B use 0.5G+0.5B.
Population and aggregation: Demosaiced DNB master
Units and coordinates: visual RGB channels
Interpretation: Read as an alternative display.
Limitations: No elemental-abundance ratio or new CFA extractor.
Field: channel_mapping
Method and provenance
source/enhanced_preview.py · render; channel_proxy · linked-asinh-srgb-2
SHA-256: 95db5d026578390cdf0d92f4b82679b740f57666040d2e9c533c769d2d3fd7aa
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Master and display previews · Visual RGB+DNB composition
Optional primary documentation (Internet)
Visual RGB+DNB composition
Meaning: Adds narrowband-emphasized structure to broadband colours; a visual product, not a new scientific measurement.
Recorded implementation: Historical recipe: H=0.85 RGB+0.15 k·aligned DNB; k is the common median matched stellar-signal ratio. Later exact product recipes take precedence and remain identified separately.
Population and aggregation: Only the specified RGB and DNB masters
Units and coordinates: relative linear comparison scale / display
Interpretation: Only explicitly accepted combinations become the main image. Geometric compatibility alone was not sufficient.
Limitations: No continuum subtraction, abundance inference or physical flux calibration. Background and PSF differences remain relevant.
Field: hybrid; comparison_scale
Method and provenance
source/master_alignment.py · pair · wcs-master-alignment-1
SHA-256: ebd90f1ea20b7780d2efbe18d5a77c0248498192ab8c8d9192664251e39ff372
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Remaining position residual · Robust scatter · Master and display previews
Optional primary documentation (Internet)
Reading status
Meaning: Success means a stage executed; it does not validate every scientific application.
Recorded implementation: Completed: result saved. Skipped: not run. Failed: attempt failed. Blocked: prerequisites missing. Unavailable: no data/source. Experimental: limited interpretation. Insufficient data: no supported test output.
Population and aggregation: Each stage and report version
Units and coordinates: categorical
Interpretation: Read with method, warnings and data coverage.
Limitations: Software checks, visual acceptance and scientific validation are separate.
Field: state; capability table
Method and provenance
source/field_report.py · publish · field-offline-report-1
SHA-256: 09bb2d1f5c7c2e54b650efc55c62bcd6b8118749bdb5f6ed63c0bc6bdba5ab3e
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition checked against the current selected source. Historical results retain their original execution receipts; this definition hash does not relabel their scientific processing.
Related terms: Known, unknown or incompatible · Conditional constancy test
Optional primary documentation (Internet)
Three separate flat acquisitions
Meaning: A, B and C stay separate; one set is explicitly selected for science calibration.
Recorded implementation: Comparison separates brightness changes and normalized spatial patterns. Actual dataset suitability is reported per experiment.
Population and aggregation: A initially, B with different pointing, C later near A
Units and coordinates: separate acquisition IDs
Interpretation: A≈C with different B is suggestive, not proof of a pointing effect.
Limitations: No automatic mixing or choosing the set by the prettiest nebula.
Field: sets; science_use
Method and provenance
source/flat_experiment.py · analyse · source_sha256
SHA-256: d18b3032fb665bd36b66e2a569ee223b40aa3fb04746e8b3c936b8fe5f5f8ecd
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Pointing and camera orientation · Calibration frames and masters
Optional primary documentation (Internet)
Provenance and reuse
Meaning: Records which files and methods produced a result; hashes identify content changes.
Recorded implementation: Exact source/derivative links; a filename alone is not an identity.
Population and aggregation: Source product → published copy → report
Units and coordinates: file ID / SHA-256
Interpretation: Equal hashes support reproducible association, not scientific correctness.
Limitations: External FITS depend on their original storage; availability is checked at build time.
Field: publication_manifest; source hashes
Method and provenance
code/help_definition_sources/6149f7a4b9410e3149facfb72b7a047ea383492bee9e04b954c95c249bc81230/report_publication.py · publish · static-report-bundle-1
SHA-256: 6149f7a4b9410e3149facfb72b7a047ea383492bee9e04b954c95c249bc81230
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition retained from exact archived source hash. Current overview renderer is a separate presentation adapter.
Related terms: Known, unknown or incompatible · Reading status
Optional primary documentation (Internet)
Star identity and catalogue matching
Meaning: A match names a candidate catalogue star. No hit means only that the queried table returned none.
Recorded implementation: Historical reports record Gaia matching, holdout stars and neighbour queries. Query failure is different from no match.
Population and aggregation: Catalogue matches of historically tested stars
Units and coordinates: source ID; arcseconds for catalogue separation
Interpretation: Neighbours may contaminate flux; identities may be provisional or ambiguous.
Limitations: No exoplanet detection or discovery follows from no catalogue hit. Report publication performs no new catalogue queries.
Field: source_id; separation; catalog status
Method and provenance
baseline/v12/catalog_identification.py · identify; generate · source_sha256
SHA-256: 03724e185c1b8e487f6b35a7ffdb5dfd3175a67d03fd3b2c3480ef4b18e59fdc
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Image coordinates on the sky · Conditional constancy test
Optional primary documentation (Internet)
https://exoplanetarchive.ipac.caltech.edu/docs/TAP/usingTAP.html
Image coordinates on the sky
Meaning: WCS connects pixel positions to celestial coordinates and is valid for a specific geometry.
Recorded implementation: Original stack WCS can be unavailable; later solved master copies have separate verification receipts.
Population and aggregation: Solved reference or master copy
Units and coordinates: sky degrees / pixels of the relevant grid
Interpretation: Do not reuse an old WCS after cropping or transforming without verification.
Limitations: A solved field does not prove an exact nebular position or a transit interpretation.
Field: WCS; source solve receipts
Method and provenance
source/master_alignment.py · solution; map_xy · wcs-master-alignment-1
SHA-256: ebd90f1ea20b7780d2efbe18d5a77c0248498192ab8c8d9192664251e39ff372
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Geometric registration · Star identity and catalogue matching
Optional primary documentation (Internet)
Time and timezone
Meaning: Local time is derived from recorded time. Where TIMESYS is missing, any assumed UTC interpretation must be labelled.
Recorded implementation: Context spans first exposure start through last exposure end. Legacy curves show hours from the first segment exposure midpoint, not local clock time.
Population and aggregation: Exposure starts, context ends including exposure duration, curve midpoints
Units and coordinates: UTC / Europe/Vienna where recorded; elapsed hours for curves
Interpretation: Frame index is not time. Current saved-header plots retain their recorded time standard; unknown stays unknown.
Limitations: No invented time scales or barycentric corrections.
Field: time; DATE-OBS; TIMESYS
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Coverage and gaps · Moon and observing site
Optional primary documentation (Internet)
Moon and observing site
Meaning: The icon is a calculated phase, not an observed Moon image. Inputs come from headers.
Recorded implementation: Sun–Moon–Earth illumination geometry; geometric altitude without terrain/refraction, assumed site elevation 0 m.
Population and aggregation: Model values at the observation midpoint
Units and coordinates: latitude/longitude/altitude in degrees; illumination in percent
Interpretation: Context parameter, not a measurement of actual background brightness.
Limitations: Time assumptions and local Earth-orientation data limit precision.
Field: site; moon.illuminated_fraction; altitude_deg
Method and provenance
baseline/v12/observation_context.py · moon_fraction; context · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Time and timezone · Background level
Optional primary documentation (Internet)
Weather and guiding context
Meaning: A guiding-camera model does not supply guiding measurements; absent weather and logs remain explicit.
Recorded implementation: Linked historical reports may state weather was not requested; imaging does not implicitly make a new online query. Later real logs have their own verified scope.
Population and aggregation: Existing saved context data
Units and coordinates: state; sensor temperature separately in °C
Interpretation: Do not reconstruct historical guiding curves from star shape.
Limitations: Sensor temperature is not outdoor temperature. Model weather is not an on-site telescope measurement.
Field: weather.status; GUIDECAM
Method and provenance
baseline/v12/observation_context.py · context · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Measured sensor temperature · Reading status
Optional primary documentation (Internet)
Digital image values
Meaning: ADU are camera digital counts; electrons require the appropriate conversion factor.
Recorded implementation: Raw frames, calibrated frames and normalized stacks have different processing histories.
Population and aggregation: Decoded digital pixel values
Units and coordinates: Analog-to-Digital Units
Interpretation: Compare the same measurement scales.
Limitations: Camera GAIN setting is not EGAIN in e⁻/ADU.
Field: raw counts
Method and provenance
baseline/v12/light_quality.py · measure; aperture_snr · source_sha256
SHA-256: fceb70d1855d5bb8ea3adee2d71c7ee4273b2e0bfcf5673ce020e93bd2020886
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Camera gain · Background level
Optional primary documentation (Internet)
Imaging camera
Meaning: Header camera model.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: text
Interpretation: Acquisition condition, not a quality grade.
Limitations: Model name is not a unique serial number.
Field: INSTRUME
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Device header entry
Meaning: Recorded equipment entry; it may name the mount rather than the telescope.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: text
Interpretation: Acquisition condition, not a quality grade.
Limitations: Telescope model remains unconfirmed without reliable metadata.
Field: TELESCOP
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Filter
Meaning: Header filter or explicitly labelled user profile.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: text
Interpretation: Acquisition condition, not a quality grade.
Limitations: Optolong L-eXtreme is the user-confirmed DNB association, not an identity measured from pixels.
Field: FILTER / operator DNB alias
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Focal length
Meaning: Recorded acquisition focal length.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: mm
Interpretation: Acquisition condition, not a quality grade.
Limitations: Header value, not a new astrometric measurement.
Field: FOCALLEN
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Sensor pixel size
Meaning: Recorded physical pixel size.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: µm
Interpretation: Acquisition condition, not a quality grade.
Limitations: Different from coordinates on a half-resolution green grid.
Field: XPIXSZ
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Exposure duration
Meaning: Duration of one exposure.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: s
Interpretation: Acquisition condition, not a quality grade.
Limitations: Context lists distinct header values, not necessarily a mean.
Field: EXPTIME
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Camera gain
Meaning: Setting influencing readout behaviour.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: camera setting
Interpretation: Acquisition condition, not a quality grade.
Limitations: Not EGAIN in electrons/ADU; no SNR conversion is inferred from GAIN.
Field: GAIN
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Camera offset
Meaning: Digital offset to avoid clipping low signals.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: camera setting
Interpretation: Acquisition condition, not a quality grade.
Limitations: Not automatically the measured background.
Field: OFFSET
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Horizontal binning
Meaning: Header horizontal sensor-pixel binning.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: factor
Interpretation: Acquisition condition, not a quality grade.
Limitations: The supported imaging branch requires bin 1; selecting green positions is not camera binning.
Field: XBINNING
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Vertical binning
Meaning: Header vertical sensor-pixel binning.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: factor
Interpretation: Acquisition condition, not a quality grade.
Limitations: Not aspect ratio or preview-PNG scaling.
Field: YBINNING
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Sensor cooling setpoint
Meaning: Requested cooling temperature.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: °C
Interpretation: Acquisition condition, not a quality grade.
Limitations: Different from measured sensor or outdoor temperature.
Field: SET-TEMP
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Measured sensor temperature
Meaning: Camera sensor temperature for an exposure.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: °C
Interpretation: Acquisition condition, not a quality grade.
Limitations: Not a weather thermometer.
Field: CCD-TEMP
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Focuser position
Meaning: Recorded focuser position.
Recorded implementation: Saved context lists available values; missing metadata are not invented.
Population and aggregation: Distinct recorded header values of the selected Lights
Units and coordinates: device steps
Interpretation: Acquisition condition, not a quality grade.
Limitations: Not distance in millimetres or direct proof of focus quality.
Field: FOCUSPOS
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Known, unknown or incompatible
Optional primary documentation (Internet)
Inventoried frame count
Meaning: Counts image files, not stars or valid curve points.
Recorded implementation: Saved inventories are counted by frame type. Candidates, actual master members and stacked Lights are distinct sets.
Population and aggregation: Inventoried files of the specified type in the selected source
Units and coordinates: file count
Interpretation: Use membership and stack receipts to establish actual usage.
Limitations: Presence does not prove calibration compatibility.
Field: inventory counts by image type
Method and provenance
baseline/v12/baseline/v11_source/astro_session.py · inspect_session · legacy_v11
SHA-256: 189ba0f7baa53a57793c6d763a5aa90dd69b94a7b60cb84cb6cf4e035427ab00
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Calibration frames and masters · Candidates versus selected calibration · Stack and integration time
Optional primary documentation (Internet)
Guiding-camera header entry
Meaning: Camera designation alone; not a guiding time series.
Recorded implementation: Reads GUIDECAM. No guiding residual or RMS is inferred from the name.
Population and aggregation: Saved Light-frame headers
Units and coordinates: model designation
Interpretation: Future real logs require a separate analysis.
Limitations: No historical guiding telemetry is reconstructed.
Field: GUIDECAM
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Imaging camera · Known, unknown or incompatible
Optional primary documentation (Internet)
Observing site
Meaning: Header coordinates, not a new GPS measurement.
Recorded implementation: Only complete consistent coordinates inform lunar altitude; elevation is assumed 0 m.
Population and aggregation: Consistent selected FITS header site coordinates
Units and coordinates: geographic latitude / longitude in degrees
Interpretation: Site coordinates are not the nebula position.
Limitations: Missing or conflicting values stay unknown.
Field: site.latitude; site.longitude
Method and provenance
baseline/v12/observation_context.py · context; render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Moon and observing site · Known, unknown or incompatible
Optional primary documentation (Internet)
Sky brightness, if supplied
Meaning: No Bortle class was supplied for these reports.
Recorded implementation: No class is derived from background ADU or site coordinates.
Population and aggregation: Unavailable
Units and coordinates: no measured class in this report
Interpretation: A missing context item is not a measurement.
Limitations: No automatic light-pollution grade.
Field: not provided
Method and provenance
baseline/v12/observation_context.py · render · source_sha256
SHA-256: 31933cae4da3e73577db402aa340c026b2f537584f6768d77fe5c1b244713473
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Background level · Observing site
Optional primary documentation (Internet)
Recorded pointing
Meaning: Saved acquisition direction, not an independently determined nebula position.
Recorded implementation: Object grouping combines explicit aliases and recorded pointing hints.
Population and aggregation: Median recorded RA/DEC hints in the group
Units and coordinates: right ascension / declination in degrees
Interpretation: Different from geographic site, camera rotation or solved stellar positions.
Limitations: The displayed object position is not a new plate solve.
Field: coordinates_deg
Method and provenance
code/help_definition_sources/084f212fe3d7e0624ff430c88715630a991382030006bb20c6081e53a7e5347b/object_library.py · identify · object-library-new-night-5
SHA-256: 084f212fe3d7e0624ff430c88715630a991382030006bb20c6081e53a7e5347b
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition retained from exact archived source hash. Current overview renderer is a separate presentation adapter.
Related terms: Observing site · Pointing and camera orientation · Image coordinates on the sky
Optional primary documentation (Internet)
Historical light-curve calibration
Meaning: Older curves used temporary green-grid masters; their candidate list does not establish exact membership.
Recorded implementation: legacy_v11 checks camera, binning, dimensions, Bayer, gain, offset and setpoint. Lights/Darks require equal exposure and measured temperature within 0.5 °C of the first Light. G1 Dark/Bias are means; bias-subtracted G1 Flats are individually median-normalized then averaged. Light=(G1−Dark)/Flat.
Population and aggregation: Historical local Dark, Bias and Flat groups
Units and coordinates: G1 ADU; normalized flat dimensionless
Interpretation: No additional Bias subtraction from Lights. No modern Field Alpha mask/CFA plan is retroactively claimed.
Limitations: Device serial, filter, ROI and optical continuity are not fully established; old temporary masters and membership were not fully archived reproducibly.
Field: temporary G1 dark/bias/flat masters
Method and provenance
baseline/v12/baseline/v11_source/differential_photometry.py · mean_master; analyse · legacy_v11
SHA-256: 5968942254298fd066921fd2804e03f0f3bf3d9b92bba3e0e0ea30e9fdda513d
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Candidates versus selected calibration · Bayer green grids and pixel phase · Modelled uncertainty
Optional primary documentation (Internet)
Geometry between masters
Meaning: Describes two finished masters relative to each other, not mechanical camera rotation.
Recorded implementation: Map the DNB centre and two points offset by 10 DNB pixels through WCS. Differences/10 form J. atan2(J₁₀,J₀₀) gives angle; |det J| is local area scale; det J<0 indicates parity change. The final count concerns present matches with both source indices <150.
Population and aggregation: WCS mapping near DNB centre and saved source-list comparison
Units and coordinates: degrees; area ratio; boolean; RGB pixels; count
Interpretation: Area ratio near 1 indicates similar local scale. Crop bounds retain the reference pixel units.
Limitations: Local geometry is not proof of a global rigid transform or the cause of an older matching failure.
Field: relative_rotation_deg; local_relative_area_scale; parity_change; dnb_center_on_rgb_grid; old_150_bright_subset_common
Method and provenance
code/provenance/finalize_alignment_review.py · top-level geometry_diagnosis · source_sha256
SHA-256: 4dba4ed1d060692b512fb0234ffb1d1ecb7db96ab74d781f61041cd3dba01c29
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Remaining position residual · Common field coverage · Pointing and camera orientation · Image coordinates on the sky
Optional primary documentation (Internet)
Sources and unique associations
Meaning: Detections, sources in the comparison footprint and mutually unique matches are different counts.
Recorded implementation: DNB_in_RGB contains WCS-projected sources at least 12 RGB pixels from the border. Match mutual nearest neighbours within <8 RGB pixels. Fraction=matches/max(1,DNB_in_RGB). Alternate x-sorted entries go to fitting and independent checking.
Population and aggregation: Detected sources in both masters before fit/holdout split
Units and coordinates: counts and dimensionless fraction
Interpretation: Not raw-exposure PSF fits or all stars on the sky.
Limitations: 8 pixels is the proposal radius; final residual gates are stricter.
Field: detections.RGB; detections.DNB; DNB_in_RGB; unique_mutual_matches; matched_fraction_of_available_DNB
Method and provenance
source/master_alignment.py · pair · wcs-master-alignment-1
SHA-256: ebd90f1ea20b7780d2efbe18d5a77c0248498192ab8c8d9192664251e39ff372
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Remaining position residual · Detected sources · Reading status
Optional primary documentation (Internet)
Spatial registration checks
Meaning: Small residuals alone are insufficient; held-out stars must span the field.
Recorded implementation: Median, p90 and maximum summarize residual lengths; median_vector_xy is componentwise. x/y spans are divided by image width/height. quadrants counts populated image quarters; hull_fraction is convex-hull area/image area.
Population and aggregation: Held-out associations not used in the affine correction
Units and coordinates: counts; RGB pixels; area/span fractions
Interpretation: A large hull means spatial coverage, not photometric precision.
Limitations: Engineering gates, not p-values or calibrated confidence intervals.
Field: heldout.n; median_px; p90_px; max_px; median_vector_xy; fraction_x_span; fraction_y_span; quadrants; hull_fraction
Method and provenance
source/master_alignment.py · metrics; pair · wcs-master-alignment-1
SHA-256: ebd90f1ea20b7780d2efbe18d5a77c0248498192ab8c8d9192664251e39ff372
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition am archivierten Quelltext und vorhandenen Bericht geprüft; ohne gespeicherten Erzeuger-Hash ist die exakte historische Ausführungsversion nicht nachträglich bewiesen.
Related terms: Remaining position residual · Percentiles · Median · Reading status
Optional primary documentation (Internet)
Raw Bayer-channel histogram
Meaning: Raw digital distributions before calibration and demosaicing.
Recorded implementation: Historical view: 256 bins of 256 codes across the full range; lower-range view uses 256 bins up to about 1.15× largest channel p99, bounded to 256…65535. Supported unsigned 16-bit exposures are aggregated by pixel count.
Population and aggregation: All counted supported channel pixels; not an average of exposure medians
Units and coordinates: percent of counted channel pixels per bin, not percent of exposures
Interpretation: Raw ADU: full 0–65535 or lower-range view. Historical full-range Y is logarithmic and lower-range Y linear; X linear. Current interactive histograms label their actual stored count/bin scale.
Limitations: Nebulosity, filter, offset and exposure change the distributions.
Field: histograms.csv / per-channel counts
Method and provenance
baseline/v12/histogram_analysis.py · generate; summarize · source_sha256
SHA-256: dafb28cb74c92aee431e65cd20784536edf3ee1453e5d6ccfe58fcff1e62c894
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Related terms: Bayer green grids and pixel phase · Digital image values · Median · Percentiles · Digital endpoints
Optional primary documentation (Internet)
Linear-master histogram
Meaning: Counts saved master values before display stretching.
Recorded implementation: Historical plot: 180 bins per RGB channel, sampling every fourth pixel on both axes. Current Explorer products expose their own exact count arrays and sampling receipts.
Population and aggregation: Historical: every fourth pixel in each dimension
Units and coordinates: sampled pixels per bin
Interpretation: Relative linear units, not calibrated raw ADU. Historical X linear, Y logarithmic; joint 0.01st–99.5th percentile display bounds do not delete outer values.
Limitations: Not the raw Bayer histogram or a colour-calibration result.
Field: sampled linear master; bins not saved separately
Method and provenance
source/field_report.py · publish · source_sha256
SHA-256: 09bb2d1f5c7c2e54b650efc55c62bcd6b8118749bdb5f6ed63c0bc6bdba5ab3e
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Definition checked against the current selected source. Historical results retain their original execution receipts; this definition hash does not relabel their scientific processing.
Related terms: Master and display previews · Percentiles · Digital endpoints
Optional primary documentation (Internet)
RUWE
Meaning: Astrometric-fit diagnostic, not a quality score for this photograph.
Recorded implementation: Gaia DR3 catalogue information, not new measurements from these images.
Population and aggregation: Exact Gaia source ID
Units and coordinates: see catalogue schema
Interpretation: Distinguish band, model method and uncertainty.
Limitations: Model dependence and systematic uncertainties remain.
Field: gaia_ruwe
Method and provenance
source/stellar_enrichment.py · card; mass_status · stellar-cards-0.4.1
SHA-256: 9fc65c030af4749a74da79f88b03a48b9cea4d628040df5f48d614331e1ae64c
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Gaia DR3 release documentation and live ESA TAP schema inspected; catalogue estimates, no new image measurement.
Related terms:
Optional primary documentation (Internet)
Parallax
Meaning: An angular displacement contributing to distance inference.
Recorded implementation: Gaia DR3 catalogue information, not new measurements from these images.
Population and aggregation: Exact Gaia source ID
Units and coordinates: see catalogue schema
Interpretation: Distinguish band, model method and uncertainty.
Limitations: Model dependence and systematic uncertainties remain.
Field: gaia_parallax
Method and provenance
source/stellar_enrichment.py · card; mass_status · stellar-cards-0.4.1
SHA-256: 9fc65c030af4749a74da79f88b03a48b9cea4d628040df5f48d614331e1ae64c
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Gaia DR3 release documentation and live ESA TAP schema inspected; catalogue estimates, no new image measurement.
Related terms:
Optional primary documentation (Internet)
log g
Meaning: Logarithm of surface gravity, not stellar mass.
Recorded implementation: Gaia DR3 catalogue information, not new measurements from these images.
Population and aggregation: Exact Gaia source ID
Units and coordinates: see catalogue schema
Interpretation: Distinguish band, model method and uncertainty.
Limitations: Model dependence and systematic uncertainties remain.
Field: gaia_logg
Method and provenance
source/stellar_enrichment.py · card; mass_status · stellar-cards-0.4.1
SHA-256: 9fc65c030af4749a74da79f88b03a48b9cea4d628040df5f48d614331e1ae64c
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Gaia DR3 release documentation and live ESA TAP schema inspected; catalogue estimates, no new image measurement.
Related terms:
Optional primary documentation (Internet)
A_G
Meaning: Estimated extinction in the Gaia G band, not elemental abundance.
Recorded implementation: Gaia DR3 catalogue information, not new measurements from these images.
Population and aggregation: Exact Gaia source ID
Units and coordinates: see catalogue schema
Interpretation: Distinguish band, model method and uncertainty.
Limitations: Model dependence and systematic uncertainties remain.
Field: gaia_ag
Method and provenance
source/stellar_enrichment.py · card; mass_status · stellar-cards-0.4.1
SHA-256: 9fc65c030af4749a74da79f88b03a48b9cea4d628040df5f48d614331e1ae64c
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Gaia DR3 release documentation and live ESA TAP schema inspected; catalogue estimates, no new image measurement.
Related terms:
Optional primary documentation (Internet)
FLAME
Meaning: Model-dependent Gaia mass/radius estimates; account for model limits and flags.
Recorded implementation: Gaia DR3 catalogue information, not new measurements from these images.
Population and aggregation: Exact Gaia source ID
Units and coordinates: see catalogue schema
Interpretation: Distinguish band, model method and uncertainty.
Limitations: Model dependence and systematic uncertainties remain.
Field: gaia_flame
Method and provenance
source/stellar_enrichment.py · card; mass_status · stellar-cards-0.4.1
SHA-256: 9fc65c030af4749a74da79f88b03a48b9cea4d628040df5f48d614331e1ae64c
Definition traced to archived source. An exact historical execution revision is not always available. This translation does not claim a new scientific validation.
Original archived provenance note
Gaia DR3 release documentation and live ESA TAP schema inspected; catalogue estimates, no new image measurement.
Related terms: