FIRST Catalog

File Format: FITS binary table

Name: tsFIRST.fit

Produced by: FIRST folks

Used by: ts, target

Size:

Archived? Yes

Description

FIRST source catalog. There is one file for the entire FIRST catalog (as currently distributed by the FIRST folks), with an HDU for every FIRST field on the sky.

Primary Header


SIMPLE  =                    T
BITPIX  =                    8
NAXIS   =                    0
EXTEND  =                    T
VERSION = 'XXX     '           / FIRST catalog version
END

Table Header

There is one of these HDUs per FIRST field, with roughly 20,000 fields over the entire sky and 40 sources per field.


XTENSION= 'BINTABLE'          
BITPIX  =                    8
NAXIS   =                    2
NAXIS1  =                   64
NAXIS2  =                  XXX
PCOUNT  =                    0
GCOUNT  =                    1
FIELD   =                  XXX / Unique id for the field
CREATVER= 'XXX     '           / Catalog version which first included this field
RASTART =               XXX.XX / Start right ascension (J2000, deg), inclusive
RAEND   =               XXX.XX / End right ascension (J2000, deg), exclusive
DECSTART=               XXX.XX / Start declination (J2000, deg), inclusive
DECEND  =               XXX.XX / End declination (J2000, deg), exclusive
TFIELDS =                   19
TFORM1  = '1J      '
TTYPE1  = 'ID      '           / Unique identifier over entire catalog
TUNIT1  = 'unitless'
TFORM2  = '1D      '                                                           
TTYPE2  = 'ra      '           / J2000 right ascension
TUNIT2  = 'degrees '
TFORM3  = '1D      '                                                           
TTYPE3  = 'dec     '           / J2000 declination
TUNIT3  = 'degrees '
TFORM4  = '1D      '                                                           
TTYPE4  = 'lambda  '           / Survey "longitude"
TUNIT4  = 'degrees '
TFORM5  = '1D      '                                                           
TTYPE5  = 'eta     '           / Survey "latitude"
TUNIT5  = 'degrees '
TFORM6  = '1J      '                                                           
TTYPE6  = 'wflag   '           / 1=sidelobe, 0=not a sidelobe
TUNIT6  = 'unitless'
TFORM7  = '1E      '                                                           
TTYPE7  = 'fpeak   '           / Peak flux density
TUNIT7  = 'mJy     '
TFORM8  = '1E      '                                                           
TTYPE8  = 'fint    '           / Integrated flux density
TUNIT8  = 'mJy     '
TFORM9  = '1E      '                                                           
TTYPE9  = 'rms     '           / Local noise estimate at the source position
TUNIT9  = 'mJy     '
TFORM10 = '1E      '                                                           
TTYPE10 = 'maj     '           / Major axis FWHM
TUNIT10 = 'arcsec  '
TFORM11 = '1E      '                                                           
TTYPE11 = 'min     '           / Minor axis FWHM
TUNIT11 = 'arcsec  '
TFORM12 = '1E      '                                                           
TTYPE12 = 'pa      '           / Position angle (east of north)
TUNIT12 = 'degrees '
END