FITS Headers

wmap_ampl_bl_covar_W4_9yr_v5.fits

Primary Header

SIMPLE  =                    T / Written by IDL:  Mon Sep 12 12:13:28 2016      
BITPIX  =                  -64 / number of bits per data pixel                  
NAXIS   =                    2 / number of data axes                            
NAXIS1  =                 2001 /                                                
NAXIS2  =                 2001 /                                                
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    = '2014-02-17T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
TELESCOP= 'WMAP    '           /Wilkinson Microwave Anisotropy Probe            
COMMENT   This file contains the full l-by-l covariance matrix associated with  
COMMENT   the 9-year beam transfer function for the WMAP differencing assembly  
COMMENT   indicated by the DA keyword.  In the notation of Appendix A2 of       
COMMENT   Hinshaw et al. 2007 (ApJ 170, 288), B_ll' = , where         
COMMENT   u_l = delta(b_l)/b_l is the fractional error in the beam transfer     
COMMENT   function b_l.                                                         
COMMENT   This is a symmetric matrix whose rows and columns are implicitly      
COMMENT   indexed by ascending multipole moment; the range of l is 0 to l_max,  
COMMENT   where l_max corresponds to NAXIS1 - 1 and is DA dependent. Since b_l  
COMMENT   is normalized to 1.0 at l=1, B_ll' assumes a value of zero for        
COMMENT   entries with this multipole value.                                    
REFERENC= 'Hinshaw et al. 2007, ApJS 170, 288'                                  
RELEASE = 'DR5     '           / WMAP Release                                   
VERSION = 'PASS 5  '           / Internal WMAP Version                          
DA      = 'W4      '           / Differencing Assembly                          
COMMENT                                                                         
END