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FITS Headers

wmap_band_smth_iqumap_r9_7yr_V_v4.fits

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    = '2009-08-26T18:18:56' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
TELESCOP= 'MAP     '           / 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, and U)        
COMMENT Res 9 skymaps for the frequency band indicated by                       
COMMENT the FREQ keyword.                                                       
COMMENT Seven years of data went into the map                                   
REFERENC= 'MAP Explanatory Supplement'                                          
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)                           
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe            
OBJECT  = 'ALL-SKY '           / Portion of sky given                           
EQUINOX =               2000.0 / Equinox of coordinates                         
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /        
PIXTYPE = 'HEALPIX '           / Pixel algorithm                                
ORDERING= 'NESTED  '           / Ordering scheme                                
NSIDE   =                  512 /Resolution Parameter                            
NPIX    =              3145728 /Number of pixels                                
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =              3145727 /Last pixel (0 based)                            
STOKES  = 'IQU     '           /                                                
FREQ    = 'V band  '           /Frequency band                                  
RELEASE = 'DR4     '           /WMAP Release                                    
RESOLUTN=                    9 /Resolution Index                                
END                                                                             

Stokes Maps

XTENSION= 'BINTABLE'           / binary table extension                         
BITPIX  =                    8 / 8-bit bytes                                    
NAXIS   =                    2 / 2-dimensional binary table                     
NAXIS1  =                   16 / 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 =                    4 / 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  = 'N_OBS   '           /                                                
TFORM4  = 'E       '           /                                                
TUNIT4  = 'counts  '           /                                                
EXTNAME = 'Stokes Maps'        /                                                
DATE    = '2009-08-26T14:18:56' /                                               
PIXTYPE = 'HEALPIX '           /                                                
ORDERING= 'NESTED  '           /                                                
NSIDE   =                  512 /                                                
FIRSTPIX=                    0 /                                                
LASTPIX =              3145727 /                                                
END                                                                             

Weight Arrays

XTENSION= 'BINTABLE'           / binary table extension                         
BITPIX  =                    8 / 8-bit bytes                                    
NAXIS   =                    2 / 2-dimensional binary table                     
NAXIS1  =                   16 / 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 =                    4 / number of fields in each row                   
TTYPE1  = 'N_OBS   '           /                                                
TFORM1  = 'E       '           /                                                
TTYPE2  = 'QQ      '           /                                                
TFORM2  = 'E       '           /                                                
TUNIT2  = 'counts  '           /                                                
TTYPE3  = 'QU      '           /                                                
TFORM3  = 'E       '           /                                                
TUNIT3  = 'counts  '           /                                                
TTYPE4  = 'UU      '           /                                                
TFORM4  = 'E       '           /                                                
TUNIT4  = 'counts  '           /                                                
EXTNAME = 'Weight Arrays'      /                                                
DATE    = '2009-08-26T14:18:56' /                                               
PIXTYPE = 'HEALPIX '           /                                                
ORDERING= 'NESTED  '           /                                                
NSIDE   =                  512 /                                                
FIRSTPIX=                    0 /                                                
LASTPIX =              3145727 /                                                
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                                                                             

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