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Glossary of WSA attributes
This Glossary alphabetically lists all attributes used in the UKIDSSDR2 database(s) held in the WSA. If you would like to have more information about the schema tables please use the UKIDSSDR2 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

E
Name	Schema Table	Database	Description	Type	Length	Unit	Default Value	Unified Content Descriptor
e_DEcs	nvssSource	NVSS	Mean error on Dec	real	4	arcsec		ERROR
e_majAxis	nvssSource	NVSS	Mean error on majAxis	real	4	arcsec		ERROR
e_minAxis	nvssSource	NVSS	Mean error on minAxis	real	4	arcsec		ERROR
e_PA	nvssSource	NVSS	Mean error on PA	real	4	degrees		ERROR
e_polFlux	nvssSource	NVSS	Mean error on polFlux	real	4	mJy		ERROR
e_polPA	nvssSource	NVSS	Mean error on polPA	real	4	mJy		ERROR
e_RAs	nvssSource	NVSS	Mean error on RA	real	4	s		ERROR
e_S14	nvssSource	NVSS	Mean error on S14	real	4	mJy		ERROR
e_score	twomass_xsc	2MASS	extended score: 1(extended) < e_score < 2(point-like).	real	4			CODE_MISC
Ebmv	CompleteStars, ReliableGalaxies, ReliableStars, Source	SSA	The estimated foreground reddening at this position from Schlegel et al. (1998)	real	4	mag		PHOT_EXTINCTION_GAL
eBV	dxsJKsource, dxsSource, lasExtendedSource, lasPointSource, lasSource, lasYJHKsource, reliableDxsSource, reliableLasPointSource, udsSource	WSA	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
eFlag	rosat_bsc, rosat_fsc	ROSAT	source extended beyond SASS extraction radius	varchar	1			CODE_MISC
ell	UKIDSSDetection	WSA	1-b/a, where a/b=semi-major/minor axes	real	4			PHYS_ELLIPTICITY
ell	dxsDetection, dxsListRemeasurement, gcsDetection, gcsListRemeasurement, gpsDetection, gpsListRemeasurement, lasDetection, lasListRemeasurement, udsListRemeasurement	WSA	1-b/a, where a/b=semi-major/minor axes {catalogue TType keyword: Ellipticity}	real	4			PHYS_ELLIPTICITY
ell	ptsDetection	WSATransit	1-b/a, where a/b=semi-major/minor axes {catalogue TType keyword: Ellipticity}	real	4			PHYS_ELLIPTICITY
ell	udsDetection	WSA	1-b/a, where a/b=semi-major/minor axes (SE: THETA_IMAGE) {catalogue TType keyword: Ellipticity}	real	4			PHYS_ELLIPTICITY
ellfit_flg	twomass_xsc	2MASS	ellipse fitting contamination flag.	smallint	2			CODE_MISC
ellipB	CompleteStars, ReliableGalaxies, ReliableStars, Source	SSA	Ellipticity of B band detection	real	4		-0.99999995e9	PHYS_ELLIPTICITY
ellipI	CompleteStars, ReliableGalaxies, ReliableStars, Source	SSA	Ellipticity of I band detection	real	4		-0.99999995e9	PHYS_ELLIPTICITY
ellipMax	Plate	SSA	Maximum object ellipticity in IAM file	real	4			PHYS_ELLIPTICITY
ellipMean	Plate	SSA	Mean object ellipticity in IAM file	real	4			PHYS_ELLIPTICITY
ellipMed	Plate	SSA	Median ellipticity in IAM file	real	4			PHYS_ELLIPTICITY
ellipMin	Plate	SSA	Minimum object ellipticity in IAM file	real	4			PHYS_ELLIPTICITY
ellipMode	Plate	SSA	Modal object ellipticity in IAM file	real	4			PHYS_ELLIPTICITY
ellipR1	CompleteStars, ReliableGalaxies, ReliableStars, Source	SSA	Ellipticity of R1 band detection	real	4		-0.99999995e9	PHYS_ELLIPTICITY
ellipR2	CompleteStars, ReliableGalaxies, ReliableStars, Source	SSA	Ellipticity of R2 band detection	real	4		-0.99999995e9	PHYS_ELLIPTICITY
ELLIPTICITY	mgcDetection	MGC	1 - B_IMAGE/A_IMAGE	real	4
emulpos	Plate	SSA	SuperCOSMOS emulsion position, eg. up	varchar	4			INST_PARAM
emulsion	Plate	SSA	Kodak emulsion type, eg. 103a-E, IIIa-J, IV-N	varchar	8			INST_PLATE_EMULSION
endCol	MultiframeDetector	WSA	End column of array readout {image extension keyword: RDOUT_X2}	smallint	2			NUMBER
endCol	MultiframeDetector	WSATransit	End column of array readout {image extension keyword: RDOUT_X2}	smallint	2			NUMBER
endDate	AstrCalVers	WSATransit	MJD of the end time for this version of the calibration	float	8	Julian days		TIME_DATE
endDate	AstrCalVers, PreviousSpatialMap, PreviousStdStarInfo	WSA	MJD of the end time for this version of the calibration	float	8	Julian days		TIME_DATE
endDate	PhotCalVers	WSA	Date time of end time for this version of the calibration (MM-DD-YYYY)	datetime	8	MM-DD-YYYY	12-31-9999	TIME_DATE
endDate	PhotCalVers	WSATransit	Date time of end time for this version of the calibration (MM-DD-YYYY)	datetime	8	MM-DD-YYYY	12-31-9999	TIME_DATE
endRow	MultiframeDetector	WSA	End row of array readout {image extension keyword: RDOUT_Y2}	smallint	2			NUMBER
endRow	MultiframeDetector	WSATransit	End row of array readout {image extension keyword: RDOUT_Y2}	smallint	2			NUMBER
epoch	CompleteStars, ReliableGalaxies, ReliableStars, Source	SSA	Epoch of position (variance weighted mean epoch of available measures)	real	4	year		TIME_EPOCH
epoch	Plate	SSA	Epoch of observation	real	4	years		TIME_EPOCH
epoch	dxsSourceRemeasurement, gcsPointSource, gcsSource, gcsSourceRemeasurement, gcsZYJHKsource, gpsJHKsource, gpsPointSource, gpsSource, gpsSourceRemeasurement, lasExtendedSource, lasPointSource, lasSource, lasSourceRemeasurement, lasYJHKsource, reliableGcsPointSource, reliableGpsPointSource, reliableLasPointSource, udsSourceRemeasurement	WSA	Epoch of position measurement	float	8	Years	-0.9999995e9	TIME_EPOCH
epoch	ukirtFSstars	WSA	The epoch of columns ra and dec	real	4	years	-0.9999995e9
epochMax	Survey	SSA	Maximum epoch of observations	real	4	year		TIME_EPOCH
epochMin	Survey	SSA	Minimum epoch of observations	real	4	year		TIME_EPOCH
epTsys	Survey	SSA	Time system for epoch values in SurveyCatalog	varchar	16			NOTE
eqTsys	Plate	SSA	Time system of equinox, eg. BESSELIAN	varchar	12			NOTE
eqTsys	Survey	SSA	Time system for equinox in SurveyCatalog	varchar	16			NOTE
equinox	Multiframe	WSA	Equinox of object position {image primary HDU keyword: EQUINOX}	real	4	years	-0.9999995e9	TIME_EQUINOX
equinox	Multiframe	WSATransit	Equinox of object position {image primary HDU keyword: EQUINOX}	real	4	years	-0.9999995e9	TIME_EQUINOX
equinox	Plate	SSA	Equinox of raPnt and decPnt	real	4	year		TIME_EQUINOX
equinox	Survey	SSA	Equinox for positions in SurveyCatalog	real	4	year		TIME_EQUINOX
equinRef	Plate	SSA	Equinox of refstar positions	real	4			TIME_EQUINOX
err_ang	twomass_psc	2MASS	Position angle on the sky of the semi-major axis of the position uncertainty ellipse (East of North)	smallint	2	degrees		POS_POS-ANG
err_maj	twomass_psc	2MASS	Semi-major axis length of the one sigma position uncertainty ellipse	real	4	arcsec		EXTENSION_RAD
err_min	twomass_psc	2MASS	Semi-minor axis length of the one sigma position uncertainty ellipse	real	4	arcsec		EXTENSION_RAD
ERRA_IMAGE	mgcDetection	MGC	Position error along major axis	real	4	pixel
ERRB_IMAGE	mgcDetection	MGC	Position error along minor axis	real	4	pixel
errBits	UKIDSSDetection	WSA	processing warning/error bitwise flags	int	4			CODE_MISC
errBits	dxsDetection, gcsDetection, gpsDetection, lasDetection	WSA	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	dxsListRemeasurement, gcsListRemeasurement, gpsListRemeasurement, lasListRemeasurement, udsListRemeasurement	WSA	processing warning/error bitwise flags {catalogue TType keyword: Error_bit_flag}	int	4			CODE_MISC
errBits	ptsDetection	WSATransit	processing warning/error bitwise flags {catalogue TType keyword: Error_bit_flag}	int	4			CODE_MISC
errBits	udsDetection	WSA	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
errHr1	rosat_bsc, rosat_fsc	ROSAT	error of hardness ratio 1	float	8			ERROR
errHr2	rosat_bsc, rosat_fsc	ROSAT	error of hardness ratio 2	float	8			ERROR
errP	rosat_bsc	ROSAT	total positional error (1-sigma-radius; including 6" systematic error)	tinyint	1	arcsec		ERROR
errP	rosat_fsc	ROSAT	total positional error (1-sigma-radius; including 6" systematic error)	smallint	2	arcsec		ERROR
errSrcCps	rosat_bsc, rosat_fsc	ROSAT	error of source countrate, vignetting corrected	real	4	counts/s		ERROR
eta	CurrentAstrometry	WSATransit	SDSS system spherical co-ordinate 2 of device centre	float	8	Degrees		POS
eta	CurrentAstrometry, PreviousAstrometry	WSA	SDSS system spherical co-ordinate 2 of device centre	float	8	Degrees		POS
eta	dxsDetection, dxsJKsource, dxsListRemeasurement, dxsSource, dxsSourceRemeasurement, gcsDetection, gcsListRemeasurement, gcsPointSource, gcsSource, gcsSourceRemeasurement, gcsZYJHKsource, gpsDetection, gpsJHKsource, gpsListRemeasurement, gpsPointSource, gpsSource, gpsSourceRemeasurement, lasDetection, lasExtendedSource, lasListRemeasurement, lasPointSource, lasSource, lasSourceRemeasurement, lasYJHKsource, reliableDxsSource, reliableGcsPointSource, reliableGpsPointSource, reliableLasPointSource, UKIDSSDetection, udsDetection, udsListRemeasurement, udsSource, udsSourceRemeasurement	WSA	SDSS system spherical co-ordinate 2	float	8	Degrees		POS
eta	ptsDetection	WSATransit	SDSS system spherical co-ordinate 2	float	8	Degrees		POS
ETA_TYPE	mgcGalaxyStruct	MGC	2dFGRS Eta type	real	4		-99.9
expLength	Plate	SSA	Exposure time	real	4	minutes		TIME_EXPTIME
expTime	Multiframe	WSA	Integration time per exposure {image primary HDU keyword: EXP_TIME}	real	4	seconds	-0.9999995e9	TIME_EXPTIME
expTime	Multiframe	WSATransit	Integration time per exposure {image primary HDU keyword: EXP_TIME}	real	4	seconds	-0.9999995e9	TIME_EXPTIME
expTime	rosat_bsc	ROSAT	exposure time	smallint	2	sec		TIME_EXPTIME
expTime	rosat_fsc	ROSAT	exposure time	int	4	sec		TIME_EXPTIME
ext	rosat_bsc, rosat_fsc	ROSAT	source extent	smallint	2	arcsec		EXTENSION_DIAM
ext_key	twomass_psc	2MASS	Unique identification number of the record in the XSC that corresponds to this point source.	int	4			ID_NUMBER
ext_key	twomass_xsc	2MASS	entry counter (key) number (unique within table).	int	4			ID_NUMBER
extinction	Multiframe	WSA	Extinction coefficient {image primary HDU keyword: EXTINCT}	real	4	mag	-0.9999995e9
extinction	Multiframe	WSATransit	Extinction coefficient {image primary HDU keyword: EXTINCT}	real	4	mag	-0.9999995e9
extinctionCat	MultiframeDetector	WSA	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.
extinctionCat	MultiframeDetector	WSATransit	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	MultiframeDetector	WSA	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.
extinctionExt	MultiframeDetector	WSATransit	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.
extl	rosat_bsc, rosat_fsc	ROSAT	likelihood of source extent	smallint	2			STAT_LIKELIHOOD
extNum	allFrameSets, CurrentAstrometry, dxsDetection, dxsFrameSets, dxsListRemeasurement, gcsDetection, gcsFrameSets, gcsListRemeasurement, gpsDetection, gpsFrameSets, gpsListRemeasurement, lasDetection, lasFrameSets, lasListRemeasurement, MultiframeDetector, PreviousAstrometry, PreviousMFDZP, UKIDSSDetection, udsDetection, udsFrameSets, udsListRemeasurement	WSA	the extension number of this frame	tinyint	1			NUMBER
extNum	CurrentAstrometry, ptsDetection	WSATransit	the extension number of this frame	tinyint	1			NUMBER
extr	rosat_bsc, rosat_fsc	ROSAT	extraction radius	smallint	2	arcsec		REDUCT_EXTR-RAD
extractTool	RequiredMosaic	WSATransit	Name of extraction tool to be used	varchar	8		'CASU'	??
extractTool	RequiredMosaic, RequiredStack	WSA	Name of extraction tool to be used	varchar	8		'CASU'	??
extTableID	ExternalSurveyTable	WSATransit	the unique table ID	int	4			ID_MAIN
extTableID	ExternalSurveyTable, RequiredNeighbours	WSA	the unique table ID	int	4			ID_MAIN
extTableName	ExternalSurveyTable	WSA	the name of the table	varchar	256			ID_TABLE
extTableName	ExternalSurveyTable	WSATransit	the name of the table	varchar	256			ID_TABLE