FITS Headers


Primary Header

SIMPLE  =                    T /FITS format                                     
BITPIX  =                  -32 /                                                
NAXIS   =                    2 /Number of dimensions                            
NAXIS1  =                 6144 /                                                
NAXIS2  =                 6144 /                                                
EXTEND  =                    T /Extensions may be present                       
RESOLUTN=                    4 /Resolution Index                                
PIXTYPE = 'HEALPIX '           /Pixel algorigthm                                
ORDERING= 'NESTED  '           /Ordering scheme                                 
NSIDE   =                   16 /Resolution parameter                            
NPIX    =                 3072 /# pixels in the maps                            
DATE    = '2008-01-04T11:30:00' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
DA      = 'W1      '           /Differencing Assembly                           
FREQ    = 'W band  '           /Frequency band                                  
RELEASE = 'DR3     '           /WMAP Release                                    
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe            
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /        
COMMENT N-inverse covariance matrix for the Foreground Cleaned Res 4            
COMMENT maps for the frequence band indicated by the FREQ keyword.              
COMMENT This is a 2Nx2N matrix, ordered (Q, U).                                 
The first year of data went into the matrix.                                    

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