FITS Headers


Primary Header

SIMPLE  =                    T /FITS format                                     
BITPIX  =                  -32 /Dummy primary header                            
NAXIS   =                    2 /Number of dimensions                            
NAXIS1  =                12288 /                                                
NAXIS2  =                12288 /                                                
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    = '2006-09-19T14:38:11' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
FREQ    = 'K band  '           /Frequency band                                  
RELEASE = 'DR2     '           /WMAP Release                                    
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /        
COMMENT N-inverse covariance matrices for the Res 4 maps.                       
COMMENT This is a 4Nx4N matrix, ordered (I, Q, U, S).                           
COMMENT Three years of data went into the map.                                  
COMMENT A small effect due to transmission imbalance between radiometers        
COMMENT has been projected out of the inverse variances matrices as described   
COMMENT in Jarosik, et.al. (2007)                                               

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