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Glossary of WSA attributes

This Glossary alphabetically lists all attributes used in the UKIDSSDR10 database(s) held in the WSA. If you would like to have more information about the schema tables please use the UKIDSSDR10 Schema Browser (other Browser versions).
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

X

NameSchema TableDatabaseDescriptionTypeLengthUnitDefault ValueUnified Content Descriptor
x UKIDSSDetection WSA X coordinate of detection real 4 pixels   POS_PLATE_X
x allwise_sc WISE Unit sphere position x value float 8      
x calDetection WSACalib X coordinate of detection {catalogue TType keyword: X_coordinate}
Intensity-weighted isophotal centre-of-gravity in X.
real 4 pixels   POS_PLATE_X
x dxsDetection, gcsDetection, gcsListRemeasurement, gpsDetection, gpsListRemeasurement, lasDetection, lasListRemeasurement WSA X coordinate of detection {catalogue TType keyword: X_coordinate}
Intensity-weighted isophotal centre-of-gravity in X.
real 4 pixels   POS_PLATE_X
x ptsDetection WSATransit X coordinate of detection {catalogue TType keyword: X_coordinate}
Intensity-weighted isophotal centre-of-gravity in X.
real 4 pixels   POS_PLATE_X
x udsDetection WSA X coordinate of detection (SE: X_IMAGE) {catalogue TType keyword: X_coordinate}
Intensity-weighted isophotal centre-of-gravity in X.
real 4 pixels   POS_PLATE_X
x uhsDetection, uhsDetectionAll WSAUHS X coordinate of detection {catalogue TType keyword: X_coordinate}
Intensity-weighted isophotal centre-of-gravity in X.
real 4 pixels   POS_PLATE_X
x_coadd twomass_xsc 2MASS x (cross-scan) position (coadd coord.). real 4 arcsec   INST_POS
X_IMAGE mgcDetection MGC Object x position real 4 pixel    
X_OFF mgcGalaxyStruct MGC X offset of Galaxy Centre real 4   99.99  
X_OFFm mgcGalaxyStruct MGC X offset error (-) real 4   99.99  
X_OFFp mgcGalaxyStruct MGC X offset error (+) real 4   99.99  
x_scan twomass_psc 2MASS Mean cross-scan focal plane position of the source in the Universal scan (U-scan) coordinate system. real 4 arcsec   INST_POS
xErr UKIDSSDetection WSA Error in X coordinate real 4 pixels   ERROR
xErr calDetection WSACalib Error in X coordinate {catalogue TType keyword: X_coordinate_err}
Estimate of centroid error.
real 4 pixels   ERROR
xErr dxsDetection, gcsDetection, gcsListRemeasurement, gpsDetection, gpsListRemeasurement, lasDetection, lasListRemeasurement WSA Error in X coordinate {catalogue TType keyword: X_coordinate_err}
Estimate of centroid error.
real 4 pixels   ERROR
xErr ptsDetection WSATransit Error in X coordinate {catalogue TType keyword: X_coordinate_err}
Estimate of centroid error.
real 4 pixels   ERROR
xErr udsDetection WSA Error in X coordinate (SE: ERRX2_IMAGE½) {catalogue TType keyword: X_coordinate_err}
Estimate of centroid error.
real 4 pixels   ERROR
xErr uhsDetection, uhsDetectionAll WSAUHS Error in X coordinate {catalogue TType keyword: X_coordinate_err}
Estimate of centroid error.
real 4 pixels   ERROR
xifitrms dxsAstrometricInfo, udsAstrometricInfo WSA RMS errors in fit for xi float 8 arcsec -0.9999995e9 ??
xifitrms uhsAstrometricInfo WSAUHS RMS errors in fit for xi float 8 arcsec -0.9999995e9 ??
xisc dxsAstrometricInfo, udsAstrometricInfo WSA Scale factor in xi float 8   -0.9999995e9 ??
xisc uhsAstrometricInfo WSAUHS Scale factor in xi float 8   -0.9999995e9 ??
xizp dxsAstrometricInfo, udsAstrometricInfo WSA Zeropoint offset in xi float 8 arcsec -0.9999995e9 ??
xizp uhsAstrometricInfo WSAUHS Zeropoint offset in xi float 8 arcsec -0.9999995e9 ??
xnfitrms dxsAstrometricInfo, udsAstrometricInfo WSA RMS errors in fit for xn float 8 arcsec -0.9999995e9 ??
xnfitrms uhsAstrometricInfo WSAUHS RMS errors in fit for xn float 8 arcsec -0.9999995e9 ??
xnsc dxsAstrometricInfo, udsAstrometricInfo WSA Scale factor in xn float 8   -0.9999995e9 ??
xnsc uhsAstrometricInfo WSAUHS Scale factor in xn float 8   -0.9999995e9 ??
xnzp dxsAstrometricInfo, udsAstrometricInfo WSA Zeropoint offset in xn float 8 arcsec -0.9999995e9 ??
xnzp uhsAstrometricInfo WSAUHS Zeropoint offset in xn float 8 arcsec -0.9999995e9 ??
xph twomass_scn 2MASS Special flag indicating whether or not another photometric problem, not obviously cloud related, was found in the scan after comparing its photometry to that of overlapping scans. smallint 2     CODE_MISC
xph twomass_sixx2_scn 2MASS downgrade from DB photom. overlap compar. (non-cloud) (0|1) smallint 2      
xPixSize CurrentAstrometry WSACalib Angular size of pixels in X real 4 Arcseconds -0.9999995e9 pos.angDistance
xPixSize CurrentAstrometry WSATransit Angular size of pixels in X real 4 Arcseconds -0.9999995e9 pos.angDistance
xPixSize CurrentAstrometry WSAUHS Angular size of pixels in X real 4 Arcseconds -0.9999995e9 pos.angDistance
xPixSize CurrentAstrometry, PreviousAstrometry WSA Angular size of pixels in X real 4 Arcseconds -0.9999995e9 pos.angDistance
xPos nvssSource NVSS X position (RA direction) of the radio source real 4 pixels   POS_CCD_X
xscprox allwise_sc WISE 2MASS Extended Source Catalog (XSC) proximity. This column gives the distance between the WISE source position and the position of a nearby 2MASS XSC source, if the separation is less than 1.1 times the Ks isophotal radius size of the XSC source. This identifies WISE sources that are identically the 2MASS XSC source as well as WISE sources that are fragments of large galaxies. This column is "null" if there is no 2MASS XSC source in proximity to the WISE source. If xscprox<2" and is not "null", the WISE source is assumed to be the galaxy detected by 2MASS. The WISE source is measured using an elliptical aperture with a size, shape and orientation that is scaled from that of the 2MASS XSC source. The elliptical aperture parameters and photometry are given in the w?rsemi, w?pa, w?ba, w?gmag and w?gerr columns. float 8 arcsec    
xscprox wise_allskysc WISE 2MASS Extended Source Catalog (XSC) proximity.
This column gives the distance between the WISE source position and the position of a nearby 2MASS XSC source, if the separation is less than 1.1 times the Ks isophotal radius size of the XSC source. This identifies WISE sources that are identically the 2MASS XSC source as well as WISE sources that are fragments of large galaxies. This column is default if there is no 2MASS XSC source in proximity to the WISE source.
real 4 arcsec -0.9999995e9  
xscprox wise_prelimsc WISE Distance between the WISE source position and the position of a nearby 2MASS XSC source, if the separation is less than 1.1 times the Ks isophotal radius size of the XSC source
This column is default if there is no 2MASS XSC source in proximity to the WISE source
real 4 arcsec -0.9999995e9  
xSize MultiframeDetector WSA Corresponding image size (X); value only available if catalogue file exists {catalogue extension keyword:  NXOUT} int 4   -99999999 meta.number
xSize MultiframeDetector WSACalib Corresponding image size (X); value only available if catalogue file exists {catalogue extension keyword:  NXOUT} int 4   -99999999 meta.number
xSize MultiframeDetector WSATransit Corresponding image size (X); value only available if catalogue file exists {catalogue extension keyword:  NXOUT} int 4   -99999999 meta.number
xSize MultiframeDetector WSAUHS Corresponding image size (X); value only available if catalogue file exists {catalogue extension keyword:  NXOUT} int 4   -99999999 meta.number
xTalkFlag MultiframeDetector WSA Xtalk flag, set if xtalk check has been done. {image extension keyword: XTALK} varchar 32   NONE  
xTalkFlag MultiframeDetector WSACalib Xtalk flag, set if xtalk check has been done. {image extension keyword: XTALK} varchar 32   NONE  
xTalkFlag MultiframeDetector WSATransit Xtalk flag, set if xtalk check has been done. {image extension keyword: XTALK} varchar 32   NONE  
xTalkFlag MultiframeDetector WSAUHS Xtalk flag, set if xtalk check has been done. {image extension keyword: XTALK} varchar 32   NONE  



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07/11/2017