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FITS Headers

wmap_iqusmap_ninv_svd_r4_yr5_V2_v3p1.fits

Primary Header

SIMPLE  =                    T /FITS format                                     
BITPIX  =                  -64 /                                                
NAXIS   =                    2 /Number of dimensions                            
NAXIS1  =                12288 /                                                
NAXIS2  =                12288 /                                                
EXTEND  =                    T /Extensions may be present                       
RESOLUTN=                    4 /Resolution Index                                
PIXTYPE = 'HEALPIX '           /Pixel algorithm                                 
ORDERING= 'NESTED  '           /Ordering scheme                                 
NSIDE   =                   16 /Resolution parameter                            
NPIX    =                 3072 /# pixels in the maps                            
DATE    = '2008-04-30T00:00:00' /file creation date                             
DA      = 'V2      '           /WMAP Differencing Assembly                      
FREQ    = 'V Band  '           /Frequency Band                                  
RELEASE = 'DR3     '           /WMAP Release                                    
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe            
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /        
COMMENT Results of singular value decomposition of the N-inverse covariance     
COMMENT matrix for the year 5 Res 4 maps for the differencing assembly          
COMMENT indicated by the DA keyword.  The form of the decomposition             
COMMENT is N^{-1} = u * s * u^T.  The decomposition was done on N^{-1}          
COMMENT in Nobs units.  The results have been scaled to units of 1/mK**2        
COMMENT by dividing the original s values for this DA by 9.33454 mK**2.         
COMMENT The matrix u is an orthogonal 4NPIX x 4NPIX matrix, stored in the       
COMMENT primary data array.  The diagonal matrix of eigenvalues s, scaled to    
COMMENT 1/mK**2, is stored as a vector of length 4NPIX in the FITS extension.   
END                                                                             

Extension Header 2

XTENSION= 'IMAGE   '           / IMAGE extension                                
BITPIX  =                  -64 / Number of bits per data pixel                  
NAXIS   =                    1 / Number of data axes                            
NAXIS1  =                12288 /                                                
PCOUNT  =                    0 / No Group Parameters                            
GCOUNT  =                    1 / One Data Group                                 
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