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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HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason