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FITS Headers

wmap_forered_qumap_r4_3yr_Q_v2p1.fits

Primary Header

SIMPLE  =                    T /FITS format                                     
BITPIX  =                    8 /Dummy primary header                            
NAXIS   =                    0 /No data is associated with this header          
EXTEND  =                    T /Extensions may (will!) be present               
RESOLUTN=                    4 /Resolution index                                
PIXTYPE = 'HEALPIX '           /Pixel algorigthm                                
ORDERING= 'NESTED  '           /Ordering scheme                                 
NSIDE   =                   16 /Resolution parameter                            
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =                 3071 /Last pixel (0 based)                            
NPIX    =                 3072 /Number of pixels.                               
DATE    = '2006-09-19T19:42:14' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe            
COMMENT This file contains WMAP Polarization (Q and U) skymaps for the          
COMMENT frequency band indicated by the FREQ keyword.  The TEMPERATURE          
COMMENT and N_OBS columns need to be there for the HEALPix software;            
COMMENT however they are filled with zeros.                                     
COMMENT A foreground model has been removed from the polarization maps.         
COMMENT The map was constructed by coadding three single year maps.             
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)                                               
REFERENC= 'WMAP Explanatory Supplement:  http://lambda.gsfc.nasa.gov/' /        
STOKES  = 'QU      '           /                                                
RELEASE = 'DR2     '           /WMAP Release                                    
FREQ    = 'Q band  '           /Frequency band                                  
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  =                 3072 /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 '       /label for field 1                               
TFORM1  = 'E       '           /data format of field: 4-byte REAL               
TUNIT1  = 'mK      '           /physical unit of field 1                        
TTYPE2  = 'Q_POLARISATION '    /label for field 2                               
TFORM2  = 'E       '           /data format of field: 4-byte REAL               
TUNIT2  = 'mK,thermodynamic'   /physical unit of field 2                        
TTYPE3  = 'U_POLARISATION '    /                                                
TFORM3  = 'E       '           /                                                
TUNIT3  = 'mK,thermodynamic'   /                                                
TTYPE4  = 'N_OBS   '           /                                                
TFORM4  = 'E       '           /                                                
TUNIT4  = 'counts  '           /                                                
EXTNAME = 'Stokes Maps'        /                                                
DATE    =                    0 /                                                
PIXTYPE = 'HEALPIX '           /                                                
ORDERING= 'NESTED  '           /                                                
NSIDE   =                   16 /                                                
FIRSTPIX=                    0 /                                                
LASTPIX =                 3071 /                                                
END                                                                             

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HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
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