Haslam 408 MHz Map
FITS Header Information

Primary Header

SIMPLE  =                    T / file does conform to FITS standard             
BITPIX  =                    8 / number of bits per data pixel                  
NAXIS   =                    0 / number of data axes                            
EXTEND  =                    T / FITS dataset may contain extensions            
COMMENT   FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT   and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H 
DATE    = '2003-02-05T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
OBJECT  = 'ALL-SKY '           / Portion of sky given                           
COMMENT   This file contains data from the Haslam 408 MHz radio continuum       
COMMENT   sky survey.  The survey data were obtained from the archives of the   
COMMENT   NCSA ADIL in equatorial 1950 coordinates, and subsequently processed  
COMMENT   further in the Fourier domain to mitigate baseline striping and strong
COMMENT   point sources.  The data were then interpolated onto a Galactic       
COMMENT   coordinate system and HEALPix projection.  This file is distributed   
COMMENT   and maintained by LAMBDA.                                             
REFERENC= 'Legacy Archive for Microwave Background Data Analysis (LAMBDA)       
REFERENC= '                http://lambda.gsfc.nasa.gov/                         
REFERENC= 'A 408 MHz All-Sky Continuum Survey. II. The Atlas of Contour Maps.,  
REFERENC= 'Haslam, Stoffel, Salter & Wilson 1982 A&AS, 47, 1.                   
REFERENC= 'NCSA Astronomy Digital Image Library: http://adil.ncsa.uiuc.edu/     
REFERENC= 'HEALPix Home Page: http://www.eso.org/science/healpix/               
FREQ    = '408 MHz'            / Frequency band                                 
RESOLUTN=                    9 / Resolution index                               
SKYCOORD= 'Galactic'           / Coordinate system                              
PIXTYPE = 'HEALPIX '           / Pixel algorithm                                
ORDERING= 'NESTED  '           / Ordering scheme                                
NSIDE   =                  512 / Resolution parameter                           
NPIX    =              3145728 / # of pixels                                    
FIRSTPIX=                    0 / First pixel (0 based)                          
LASTPIX =              3145727 / Last pixel (0 based)                           
END                                                                             

Extension Header #1

XTENSION= 'BINTABLE'           /binary table extension                          
BITPIX  =                    8 /8-bit bytes                                     
NAXIS   =                    2 /2-dimensional binary table                      
NAXIS1  =                    8 /width of table in bytes                         
NAXIS2  =              3145728 /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  = 'K       '           /physical unit of field                          
TTYPE2  = 'N_OBS   '           /label for field   2                             
TFORM2  = '1E      '           /data format of field: 4-byte REAL               
TUNIT2  = 'counts  '           /physical unit of field                          
EXTNAME = 'Archive Map Table'  /name of this binary table extension             
DATE    = '2003-02-05T00:00:00' /Table creation date                            
PIXTYPE = 'HEALPIX '           /Pixel algorithm                                 
ORDERING= 'NESTED  '           /Ordering scheme                                 
NSIDE   =                  512 /Resolution parameter                            
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =              3145727 /Last pixel (0 based)                            
COMMENT   N_obs is set to 1 for all pixels. The N_obs field is filled           
COMMENT    only to provide a format consistent with that used by                
COMMENT    WMAP products.                                                       
END                                                                             

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