E |
Name | Schema Table | Database | Description | Type | Length | Unit | Default Value | Unified Content Descriptor |
eBV |
[nspid]DxsSource, [nspid]ExtendedSource, [nspid]JKsource, [nspid]LasPointSource, [nspid]PointSource, [nspid]Source, [nspid]UdsSource, [nspid]YJHKsource |
WSA NonSurvey |
The galactic dust extinction value measured from the Schlegel, Finkbeiner & Davis (1998) maps. This uses the correction given in Bonifacio, Monai & Beers (2000). This correction reduces the extinction value in regions of high extinction (E(B-V)>0.1) |
real |
4 |
|
-0.9999995e9 |
|
eccentricity |
[nspid]SatelliteOrbits |
WSA NonSurvey |
Eccentricity |
float |
8 |
|
|
|
ell |
[nspid]Detection |
WSA NonSurvey |
1-b/a, where a/b=semi-major/minor axes (SE: THETA_IMAGE) {catalogue TType keyword: Ellipticity} |
real |
4 |
|
|
PHYS_ELLIPTICITY |
ell |
[nspid]Detection |
WSA NonSurvey |
1-b/a, where a/b=semi-major/minor axes {catalogue TType keyword: Ellipticity} |
real |
4 |
|
|
PHYS_ELLIPTICITY |
ell |
[nspid]MapRemeasAver |
WSA NonSurvey |
Averaged 1-b/a, where a/b=semi-major/minor axes (SE: THETA_IMAGE) |
real |
4 |
|
|
src.ellipticity |
ell |
[nspid]MapRemeasurement |
WSA NonSurvey |
1-b/a, where a/b=semi-major/minor axes (SE: THETA_IMAGE) {catalogue TType keyword: Ellipticity} |
real |
4 |
|
|
src.ellipticity |
ell |
[nspid]SatelliteDetection |
WSA NonSurvey |
1-b/a, where a/b=semi-major/minor axes in the normal image |
real |
4 |
|
|
PHYS_ELLIPTICITY |
ell |
[nspid]UKIDSSDetection |
WSA NonSurvey |
1-b/a, where a/b=semi-major/minor axes |
real |
4 |
|
|
PHYS_ELLIPTICITY |
ellDash |
[nspid]SatelliteDetection |
WSA NonSurvey |
1-b/a, where a/b=semi-major/minor axes in the scrunched image {catalogue TType keyword: Ellipticity} |
real |
4 |
|
|
PHYS_ELLIPTICITY |
endCol |
[nspid]MultiframeDetector |
WSA NonSurvey |
End column of array readout {image extension keyword: RDOUT_X2} |
smallint |
2 |
|
|
meta.number |
endDate |
[nspid]AstrCalVers |
WSA NonSurvey |
MJD of the end time for this version of the calibration |
float |
8 |
Julian days |
|
time.epoch |
endDate |
[nspid]PhotCalVers |
WSA NonSurvey |
Date time of end time for this version of the calibration (MM-DD-YYYY) |
datetime |
8 |
MM-DD-YYYY |
12-31-9999 |
time.epoch |
endRow |
[nspid]MultiframeDetector |
WSA NonSurvey |
End row of array readout {image extension keyword: RDOUT_Y2} |
smallint |
2 |
|
|
meta.number |
epoch |
[nspid]ExtendedSource, [nspid]GcsPointSource, [nspid]GpsPointSource, [nspid]JHKsource, [nspid]LasPointSource, [nspid]PointSource, [nspid]Source, [nspid]YJHKsource, [nspid]ZYJHKsource |
WSA NonSurvey |
Epoch of position measurement |
float |
8 |
Years |
|
TIME_EPOCH |
epoch |
[nspid]FSstars |
WSA NonSurvey |
The epoch of columns ra and dec |
real |
4 |
years |
-0.9999995e9 |
|
epoch |
[nspid]RequiredMergeLogMultiEpoch |
WSA NonSurvey |
Epoch number in MergeLog table |
tinyint |
1 |
|
|
|
epoch |
[nspid]SatelliteOrbits |
WSA NonSurvey |
Epoch (in MJD) |
float |
8 |
days |
|
|
epoch |
[nspid]Variability |
WSA NonSurvey |
Epoch of measurement |
float |
8 |
Years |
|
TIME_EPOCH |
The Variability table contains statistics from the set of observations of each source. At present, the mean ra and dec and the error in two tangential directions are calculated. The "ra" direction is defined as tangential to both the radial direction and the cartesian z-axis and the "dec" direction is defined as both the radial direction and the "ra" direction. Since the current model is just the mean and standard deviation of the data, then the chi-squared of the fit=1. Data from good frames across all bands go into the astrometric model determination. This will include bands in non-synoptic filters: the one observation in these bands can help. In future releases a fit will be made to the rms data as a function of magnitude in each band, as has already happened for photometric data and a motion model that incorporates proper motion (and possibly parallax) will be used. The motion model is a parameter in the VarFrameSetInfo table. |
epochFrameType |
[nspid]Programme |
WSA NonSurvey |
The frame type to be used for each epoch (stack, tile) |
varchar |
16 |
|
NONE |
|
epochTolerance |
[nspid]Programme |
WSA NonSurvey |
Minimum separation of epochs for proper motion calculation |
real |
4 |
days |
-0.9999995e9 |
?? |
equinox |
[nspid]Multiframe |
WSA NonSurvey |
Equinox of object position {image primary HDU keyword: EQUINOX} |
real |
4 |
years |
-0.9999995e9 |
time.equinox |
errBits |
[nspid]Detection |
WSA NonSurvey |
processing warning/error bitwise flags {catalogue TType keyword: Error_bit_flag} |
int |
4 |
|
|
CODE_MISC |
This uses the FLAGS attribute in SE. The individual bit flags that this can be decomposed into are as follows: Bit Flag | Meaning | | 1 | The object has neighbours, bright enough and close enough to significantly bias the MAG_AUTO photometry or bad pixels (more than 10% of photometry affected). | | 2 | The object was originally blended with another | | 4 | At least one pixel is saturated (or very close to) | | 8 | The object is truncated (too close to an image boundary) | | 16 | Object's aperture data are incomplete or corrupted | | 32 | Object's isophotal data are imcomplete or corrupted. This is an old flag inherited from SE v1.0, and is kept for compatability reasons. It doesn't have any consequence for the extracted parameters. | | 64 | Memory overflow occurred during deblending | | 128 | Memory overflow occurred during extraction | |
|
errBits |
[nspid]Detection |
WSA NonSurvey |
processing warning/error bitwise flags {catalogue TType keyword: Error_bit_flag} |
int |
4 |
|
|
CODE_MISC |
Apparently not actually an error bit flag, but a count of the number of zero confidence pixels in the default (2 arcsec diameter) aperture. |
errBits |
[nspid]MapRemeasurement |
WSA NonSurvey |
processing warning/error bitwise flags {catalogue TType keyword: Error_bit_flag} |
int |
4 |
|
|
meta.code |
This uses the FLAGS attribute in SE. The individual bit flags that this can be decomposed into are as follows: Bit Flag | Meaning | | 1 | The object has neighbours, bright enough and close enough to significantly bias the MAG_AUTO photometry or bad pixels (more than 10% of photometry affected). | | 2 | The object was originally blended with another | | 4 | At least one pixel is saturated (or very close to) | | 8 | The object is truncated (too close to an image boundary) | | 16 | Object's aperture data are incomplete or corrupted | | 32 | Object's isophotal data are imcomplete or corrupted. This is an old flag inherited from SE v1.0, and is kept for compatability reasons. It doesn't have any consequence for the extracted parameters. | | 64 | Memory overflow occurred during deblending | | 128 | Memory overflow occurred during extraction | |
|
errBits |
[nspid]UKIDSSDetection |
WSA NonSurvey |
processing warning/error bitwise flags |
int |
4 |
|
|
CODE_MISC |
eta |
[nspid]CurrentAstrometry, [nspid]PreviousAstrometry |
WSA NonSurvey |
SDSS system spherical co-ordinate 2 of device centre |
float |
8 |
Degrees |
|
pos |
eta |
[nspid]Detection, [nspid]DxsSource, [nspid]ExtendedSource, [nspid]GcsPointSource, [nspid]GpsPointSource, [nspid]JHKsource, [nspid]JKsource, [nspid]LasPointSource, [nspid]PointSource, [nspid]Source, [nspid]SynopticSource, [nspid]UKIDSSDetection, [nspid]UdsSource, [nspid]YJHKsource, [nspid]ZYJHKsource |
WSA NonSurvey |
SDSS system spherical co-ordinate 2 |
float |
8 |
Degrees |
|
POS |
eta |
[nspid]MapRemeasAver, [nspid]MapRemeasurement |
WSA NonSurvey |
SDSS system spherical co-ordinate 2 |
float |
8 |
Degrees |
|
pos |
expAstErr |
[nspid]Variability |
WSA NonSurvey |
Rms calculated from polynomial fit to minimum astrometric RMS as a function of magnitude |
real |
4 |
arcsec |
-0.9999995e9 |
|
The Variability table contains statistics from the set of observations of each source. At present, the mean ra and dec and the error in two tangential directions are calculated. The "ra" direction is defined as tangential to both the radial direction and the cartesian z-axis and the "dec" direction is defined as both the radial direction and the "ra" direction. Since the current model is just the mean and standard deviation of the data, then the chi-squared of the fit=1. Data from good frames across all bands go into the astrometric model determination. This will include bands in non-synoptic filters: the one observation in these bands can help. In future releases a fit will be made to the rms data as a function of magnitude in each band, as has already happened for photometric data and a motion model that incorporates proper motion (and possibly parallax) will be used. The motion model is a parameter in the VarFrameSetInfo table. |
expTime |
[nspid]Multiframe |
WSA NonSurvey |
Integration time per exposure {image primary HDU keyword: EXP_TIME} |
real |
4 |
seconds |
-0.9999995e9 |
time.duration;obs.exposure |
extinction |
[nspid]Multiframe |
WSA NonSurvey |
Extinction coefficient {image primary HDU keyword: EXTINCT} |
real |
4 |
mag |
-0.9999995e9 |
|
extinctionCat |
[nspid]MultiframeDetector |
WSA NonSurvey |
Extinction coefficient for the catalogue data {catalogue extension keyword: EXTINCT} |
real |
4 |
mags |
-0.9999995e9 |
?? |
For WFCAM these are currently set to a constant clear night level, which within the current measuring error is the same for all passbands. Note that the frame-by-frame derived ZP from 2MASS automatically corrects for extinction variations, assuming they are uniform across the field of view. |
extinctionExt |
[nspid]MultiframeDetector |
WSA NonSurvey |
Extinction coefficient of the detector {image extension keyword: EXTINCT} |
real |
4 |
mags |
-0.9999995e9 |
?? |
For WFCAM these are currently set to a constant clear night level, which within the current measuring error is the same for all passbands. Note that the frame-by-frame derived ZP from 2MASS automatically corrects for extinction variations, assuming they are uniform across the field of view. |
extinctionMapList |
[nspid]Programme |
WSA NonSurvey |
A list of 3D extinction maps that should be matched to this survey |
varchar |
32 |
|
NONE |
meta.id |
extNum |
[nspid]AstrometricInfo, [nspid]Detection, [nspid]FrameSets, [nspid]Orphan, [nspid]SatelliteDetection, [nspid]SourceXDetectionBestMatch, [nspid]UKIDSSDetection |
WSA NonSurvey |
the extension number of this frame |
tinyint |
1 |
|
|
NUMBER |
extNum |
[nspid]CurrentAstrometry, [nspid]EpochFrameStatus, [nspid]MapRemeasurement, [nspid]MultiframeDetector, [nspid]PreviousAstrometry, [nspid]PreviousMFDZP |
WSA NonSurvey |
the extension number of this frame |
tinyint |
1 |
|
|
meta.number |
extNum |
[nspid]MapRemeasAver |
WSA NonSurvey |
the extension number of this frame. |
tinyint |
1 |
|
|
meta.number |
extProgID |
[nspid]RequiredNeighbours |
WSA NonSurvey |
the unique programme ID for second table if there are multiple programmes in the neighbour survey |
int |
4 |
|
-99999999 |
meta.id |
extractor |
[nspid]RequiredMatchedApertureProduct |
WSA NonSurvey |
CASU list driven or SExtractor dual image mode |
varchar |
16 |
|
|
|
extractor |
[nspid]RequiredMosaicTopLevel |
WSA NonSurvey |
Extraction software (e.g. SExtractor) |
varchar |
16 |
|
|
|
extractParamTemp |
[nspid]RequiredMosaicTopLevel |
WSA NonSurvey |
Template file for SWARP parameters |
varchar |
32 |
|
NONE |
|
extractTool |
[nspid]Programme |
WSA NonSurvey |
Name of extraction tool to be used |
varchar |
8 |
|
NONE |
?? |
extTableID |
[nspid]ExternalSurveyTable, [nspid]RequiredNeighbours |
WSA NonSurvey |
the unique table ID |
int |
4 |
|
|
meta.id;meta.main |
extTableName |
[nspid]ExternalSurveyTable |
WSA NonSurvey |
the name of the table |
varchar |
256 |
|
|
meta.id;meta.dataset |