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Glossary of WSA attributes
This Glossary alphabetically lists all attributes used in the UKIDSSR1 database(s) held in the WSA. If you would like to have more information about the schema tables please use the UKIDSSR1 Schema Browser (other Browser versions).

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I
Name	Schema Table	Database	Description	Type	Length	Unit	Default Value	Unified Content Descriptor
id	twomass_xsc	2MASS	source ID number (unique within scan, coadd).	int	4			NUMBER
id_cat	twomass_xsc	2MASS	matched galaxy's catalog name.	varchar	20			NAME
id_flg	twomass_xsc	2MASS	type/galaxy ID flag (0=non-catalog, 1=catalog, 2=LCSB).	smallint	2			CODE_MISC
idCand	rosat_bsc	ROSAT	number of identification candidates in the correlation catalogue	smallint	2			NUMBER
idCand	rosat_fsc	ROSAT	number of identification candidates in the correlation catalogue	tinyint	1			NUMBER
idType	iras_psc	IRAS	Type of Object	tinyint	1			CLASS_OBJECT
iFlag	rosat_bsc, rosat_fsc	ROSAT	broad band image available	varchar	1			CODE_MISC
im_nx	twomass_xsc	2MASS	size of postage stamp image in pixels.	smallint	2			INST_DET_SIZE
imageExtent	CurrentAstrometry, PreviousAstrometry	WSA	The maximum angular extent from the central position	real	4	Arcminutes		POS_ANG_DIST_GENERAL
imageExtName	MultiframeDetector	WSA	Extension name in source FITS image file {image extension keyword: XTENSION}	varchar	16		NONE	??
imageGcount	MultiframeDetector	WSA	FITS image extension required keyword (always 1 for uncompressed images) {image extension keyword: GCOUNT}	int	4			NUMBER
imagePcount	MultiframeDetector	WSA	FITS image extension required keyword (always 0 for uncompressed images) {image extension keyword: PCOUNT}	int	4			NUMBER
imagesLocation	ExternalSurvey	WSA	Pathname to the pixels (eg. for list-driven remeasurement)	varchar	256			??
instrument	Plate	SSA	Name of scanning machine	varchar	16			INST_ID
invSGDens	JunkDetection	SSA	Local inverse star/galaxy density	int	4			PHYS_DENSITY_SURFACE
ipeak	Detection	SSA	Intensity of brightest pixel above sky	real	4	instrumental units		PHOT_INTENSITY_MISC
isky	Detection	SSA	Estimate of sky intensity at (xCen, yCen)	real	4			PHOT_SB_SKY
isoFlux	calDetection, commDetection, dxsDetection, dxsListRemeasurement, gcsDetection, gcsListRemeasurement, gpsDetection, gpsListRemeasurement, lasDetection, lasListRemeasurement, udsDetection, udsListRemeasurement	WSA	Instrumental isophotal flux counts {catalogue TType keyword: Isophotal_flux}	real	4	ADU		PHOT_INTENSITY_ADU
isoFlux	u05a18Detection	WSA	Instrumental isophotal flux counts {catalogue TType keyword: Isophotal_flux}	real	4	ADU		PHOT_INTENSITY_ADU
			Standard definition of summed flux within detection isophote, apart from detection filter is used to define pixel connectivity and hence which pixels to include. This helps to reduce edge effects for all isophotally derived parameters.
isoMag	calDetection, commDetection, dxsDetection, dxsListRemeasurement, gcsDetection, gcsListRemeasurement, gpsDetection, gpsListRemeasurement, lasDetection, lasListRemeasurement, u05a18Detection, udsDetection, udsListRemeasurement	WSA	Calibrated isophotal magnitude	real	4	mag		PHOT_INT-MAG
itb	rosat_fsc	ROSAT	start time of observation (MM-DD-YYYY HH:MM:SS)	datetime	8	mm-dd-yyyy hh:mm:ss		TIME_DATE
ite	rosat_fsc	ROSAT	end time of observation (MM-DD-YYYY HH:MM:SS)	datetime	8	mm-dd-yyyy hh:mm:ss		TIME_DATE