ABOUT LAMBDA

FITS Header

Primary Header

SIMPLE  =                    T /FITS format
BITPIX  =                    8 /Dummy primary header
NAXIS   =                    0 /No data is associated with this header
EXTEND  =                    T /Extensions may (will!) be present
COMMENT  FITS (Flexible Image Transport System) format is defined in Astronomy
COMMENT  and Astrophysics, volume 376, page 359; bibcode: 2001A&A...376..359H
DATE    = '2014-03-31T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT)
COMMENT   This file contains data from the CHIPASS 1.4 GHz radio continuum
COMMENT   sky survey. The survey data in J2000 equatorial coordinates were
COMMENT   obtained from the Australia Telescope National Facility website
COMMENT   and interpolated to a Galactic coordinate HEALPix projection.
COMMENT   This file is distributed and maintained by LAMBDA.
REFERENC= "A New 1.4 GHz Radio Continuum Map of the Sky South of Declination
REFERENC= +25 deg", Calabretta, Staveley-Smith, and Barnes 2014, PASA, in press
REFERENC= Preprint: http://arxiv.org/abs/1310.2414
REFERENC= ATNF page: http://www.atnf.csiro.au/research/CHIPASS/index.html
REFERENC= HEALPix Home Page: http://www.eso.org/science/healpix/
FREQ    = '1394.5 MHz'         /Center Frequency
RESOLUTN=                   10 /Resolution index
SKYCOORD= 'Galactic'           /Coordinate System
PIXTYPE = 'HEALPIX '           /Pixel algorithm
ORDERING= 'NESTED  '           /Ordering scheme
NSIDE   =                 1024 /Resolution parameter
FIRSTPIX=                    0 /First pixel (0 based)
LASTPIX =             12582911 /Last pixel (0 based)
BMAJ    =             0.240000 /[deg] Beam major axis
BMIN    =             0.240000 /[deg] Beam minor axis
END

Archive Map Table

XTENSION= 'BINTABLE'           /binary table extension
BITPIX  =                    8 /8-bit bytes
NAXIS   =                    2 /2-dimensional binary table
NAXIS1  =                    8 /width of table in bytes
NAXIS2  =             12582912 /number of rows in table
PCOUNT  =                    0 /size of special data area
GCOUNT  =                    1 /one data group (required keyword)
TFIELDS =                    2 /number of fields in each row
TTYPE1  = 'TEMPERATURE'        /label for field 1
TFORM1  = '1E      '           /data format of field: 4-byte REAL
TUNIT1  = 'mK      '           /physical unit of field 1
TTYPE2  = 'SENSITIVITY'        /label for field 2
TFORM2  = '1E      '           /data format of field: 4-byte REAL
TUNIT2  = 'counts^{0.5}'       /physical unit of field 2
EXTNAME = 'Archive Map Table'  /name of this binary table extension
PIXTYPE = 'HEALPIX '           /Pixel algorigthm
ORDERING= 'NESTED  '           /Ordering scheme
NSIDE   =                 1024 /Resolution parameter
FIRSTPIX=                    0 /First pixel (0 based)
LASTPIX =             12582911 /Last pixel (0 based)
COMMENT  The TEMPERATURE field is full-beam brightness temperature,
COMMENT  calibrated using 438.5 mK/(Jy/beam) and a 3300 mK offset.
COMMENT  The SENSITIVITY field is the square root of the sum of squares
COMMENT  of the beam weights, a measure of coverage. A value of n is
COMMENT  essentially equal to n^2 independent boresight observations.
END

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Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason