WSA Browser

Glossary of WSA attributes

This Glossary alphabetically lists all attributes used in the UKIDSSDR11 database(s) held in the WSA. If you would like to have more information about the schema tables please use the UKIDSSDR11 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

Name Schema Table Database Description Type Length Unit Default Value Unified 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, gpsDetection, lasDetection 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 lasMapRemeasurement 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.cartesian.x;instr.plate

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, gpsDetection, lasDetection WSA Error in X coordinate {catalogue TType keyword: X_coordinate_err}
Estimate of centroid error. real 4 pixels ERROR

xErr lasMapRemeasurement WSA Error in X coordinate (SE: ERRX2_IMAGE^½) {catalogue TType keyword: X_coordinate_err}
Estimate of centroid error. real 4 pixels stat.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_IMAGE^½) {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

xExtent RequiredMosaicTopLevel WSAUHS The angular extent of the mosaic image in the x-direction real 4 degrees ??

xi gaiaxwise_matches GAIAXWISE Astrometric logarithmic likelihood ratio of Gaia-WISE match, as described by equation 38 of Wilson & Naylor (2018a, MNRAS, 473, 5570). float 8 dimensionless

xifitrms dxsAstrometricInfo, gcsAstrometricInfo, gpsAstrometricInfo, lasAstrometricInfo, 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, gcsAstrometricInfo, gpsAstrometricInfo, lasAstrometricInfo, udsAstrometricInfo WSA Scale factor in xi float 8 -0.9999995e9 ??

xisc uhsAstrometricInfo WSAUHS Scale factor in xi float 8 -0.9999995e9 ??

xizp dxsAstrometricInfo, gcsAstrometricInfo, gpsAstrometricInfo, lasAstrometricInfo, 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, gcsAstrometricInfo, gpsAstrometricInfo, lasAstrometricInfo, 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, gcsAstrometricInfo, gpsAstrometricInfo, lasAstrometricInfo, udsAstrometricInfo WSA Scale factor in xn float 8 -0.9999995e9 ??

xnsc uhsAstrometricInfo WSAUHS Scale factor in xn float 8 -0.9999995e9 ??

xnzp dxsAstrometricInfo, gcsAstrometricInfo, gpsAstrometricInfo, lasAstrometricInfo, udsAstrometricInfo WSA Zeropoint offset in xn float 8 arcsec -0.9999995e9 ??

xnzp uhsAstrometricInfo WSAUHS Zeropoint offset in xn float 8 arcsec -0.9999995e9 ??

xOverlap RequiredMosaicTopLevel WSAUHS The overlap between adjacent mosaics in the x-direction real 4 degrees ??

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 Detection PS1DR2 PSF x center location. real 4 raw pixels -999

xPos nvssSource NVSS X position (RA direction) of the radio source real 4 pixels POS_CCD_X

xPosErr Detection PS1DR2 Error in PSF x center location. real 4 raw pixels -999

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 K_s 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

WFAU, Institute for Astronomy,
Royal Observatory, Blackford Hill
Edinburgh, EH9 3HJ, UK

wsa-support@roe.ac.uk
17/01/2022