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FITS Header

Primary Header

SIMPLE  =                    T / file does conform to FITS standard             
BITPIX  =                   16 / 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    = '2007-10-29T22:50:26' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe            
OBJECT  = 'ALL-SKY '           / Portion of sky given                           
EQUINOX =               2000.0 / Equinox of coordinates                         
COMMENT This file contains WMAP Intensity and Polarization (I, Q, U, and S)     
COMMENT Res 4 skymaps for the differencing assembly indicated by                
COMMENT the DA keyword.                                                         
COMMENT The fifth year of data went into the map.                               
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /        
DA      = 'K1      '           /WMAP Differencing Assembly                      
FREQ    = 'K band  '           /Frequency band                                  
STOKES  = 'IQUS    '           / i, q, or u                                     
RELEASE = 'DR3     '           /WMAP Release                                    
RESOLUTN=                    4 /Resolution Index                                
PIXTYPE = 'HEALPIX '           / Pixel algorithm                                
ORDERING= 'NESTED  '           / Ordering scheme                                
NSIDE   =                   16 /Resolution Parameter                            
NPIX    =                 3072 /Number of pixels                                
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =                 3071 /Last pixel (0 based)                            
END                                                                             

Stokes Maps

XTENSION= 'BINTABLE'           / binary table extension                         
BITPIX  =                    8 / 8-bit bytes                                    
NAXIS   =                    2 / 2-dimensional binary table                     
NAXIS1  =                   20 / width of table in bytes                        
NAXIS2  =                 3072 / number of rows in table                        
PCOUNT  =                    0 / size of special data area                      
GCOUNT  =                    1 / one data group (required keyword)              
TFIELDS =                    5 / number of fields in each row                   
TTYPE1  = 'TEMPERATURE '       /                                                
TFORM1  = 'E       '           /                                                
TUNIT1  = 'mK,thermodynamic'   /                                                
TTYPE2  = 'Q_POLARISATION '    /                                                
TFORM2  = 'E       '           /                                                
TUNIT2  = 'mK,thermodynamic'   /                                                
TTYPE3  = 'U_POLARISATION '    /                                                
TFORM3  = 'E       '           /                                                
TUNIT3  = 'mK,thermodynamic'   /                                                
TTYPE4  = 'SPUR_SIGNAL '       /                                                
TFORM4  = 'E       '           /                                                
TUNIT4  = 'mK,thermodynamic'   /                                                
TTYPE5  = 'N_OBS   '           /                                                
TFORM5  = 'E       '           /                                                
TUNIT5  = 'counts  '           /                                                
EXTNAME = 'Stokes Maps'        /                                                
DATE    = '2007-10-29T18:50:26' /                                               
PIXTYPE = 'HEALPIX '           /                                                
ORDERING= 'NESTED  '           /                                                
NSIDE   =                   16 /                                                
FIRSTPIX=                    0 /                                                
LASTPIX =                 3071 /                                                
END                                                                             

Weight Arrays

XTENSION= 'BINTABLE'           / binary table extension                         
BITPIX  =                    8 / 8-bit bytes                                    
NAXIS   =                    2 / 2-dimensional binary table                     
NAXIS1  =                   28 / width of table in bytes                        
NAXIS2  =                 3072 / number of rows in table                        
PCOUNT  =                    0 / size of special data area                      
GCOUNT  =                    1 / one data group (required keyword)              
TFIELDS =                    7 / number of fields in each row                   
TTYPE1  = 'N_OBS   '           /                                                
TFORM1  = 'E       '           /                                                
TTYPE2  = 'M11     '           /                                                
TFORM2  = 'E       '           /                                                
TUNIT2  = 'counts  '           /                                                
TTYPE3  = 'M12     '           /                                                
TFORM3  = 'E       '           /                                                
TUNIT3  = 'counts  '           /                                                
TTYPE4  = 'M13     '           /                                                
TFORM4  = 'E       '           /                                                
TUNIT4  = 'counts  '           /                                                
TTYPE5  = 'M23     '           /                                                
TFORM5  = 'E       '           /                                                
TUNIT5  = 'counts  '           /                                                
TTYPE6  = 'M22     '           /                                                
TFORM6  = 'E       '           /                                                
TUNIT6  = 'counts  '           /                                                
TTYPE7  = 'M33     '           /                                                
TFORM7  = 'E       '           /                                                
TUNIT7  = 'counts  '           /                                                
EXTNAME = 'Weight Arrays'      /                                                
DATE    = '2007-10-29T18:50:26' /                                               
PIXTYPE = 'HEALPIX '           /                                                
ORDERING= 'NESTED  '           /                                                
NSIDE   =                   16 /                                                
FIRSTPIX=                    0 /                                                
LASTPIX =                 3071 /                                                
COMMENT Weight arrays must be divided by a scaling factor sigma_0^2             
COMMENT to provide a weight array in physical units (mK^-2).  See WMAP          
COMMENT Explanatory Supplement.                                                 
END                                                                             

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
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