FITS Headers


Primary Header

SIMPLE  =                    T / file does conform to FITS standard             
BITPIX  =                    8 / 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    = '2003-11-18T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
OBJECT  = 'ALL-SKY '           / Portion of sky given                           
COMMENT   This file contains the spatial dust template used in the 3-year and   
COMMENT   5-year WMAP template foreground fitting and removal process.          
COMMENT   The dust template was generated by smoothing the 94 GHz all-sky       
COMMENT   2-component model (model 8) prediction of Finkbeiner, Davis and       
COMMENT   Schlegel (1999) with a Gaussian kernel to a FWHM of 1 degree.         
COMMENT   This file is distributed and maintained by LAMBDA.  An unsmoothed     
COMMENT   version of the 94 GHz dust model map is also available from LAMBDA.   
REFERENC= 'Legacy Archive for Microwave Background Data Analysis (LAMBDA)'      
REFERENC= '                http://lambda.gsfc.nasa.gov/ '                       
REFERENC= 'Three-Year WMAP Observations: Temperature Analysis, '                
REFERENC= ' Hinshaw et al. 2007 ApJS 170, 288  '                                
REFERENC= 'Extrapolation of Galactic Dust Emission at 100 microns to Cosmic '   
REFERENC= ' Microwave Background Radiation Frequencies using FIRAS, '           
REFERENC= ' Finkbeiner, Davis & Schlegel 1999 ApJ 524, 867  '                   
REFERENC= 'Berkeley mirror site for FDS99 data: '                               
REFERENC= '                        http://astron.berkeley.edu/dust/'            
REFERENC= 'HEALPix Home Page: http://healpix.jpl.nasa.gov/ '                    
RESOLUTN=                    9 / Resolution index                               
SKYCOORD= 'Galactic'           / Coordinate system                              
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)                           
RELEASE = 'DR4     '           /                                                

Archive Map Table

XTENSION= 'BINTABLE'           /binary table extension                          
BITPIX  =                    8 /8-bit bytes                                     
NAXIS   =                    2 /2-dimensional binary table                      
NAXIS1  =                    8 /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 =                    2 /number of fields in each row                    
TTYPE1  = 'TEMPERATURE'        /label for field   1                             
TFORM1  = '1E      '           /data format of field: 4-byte REAL               
TUNIT1  = 'mK, antenna'        /physical unit of field                          
TTYPE2  = 'N_OBS   '           /label for field   2                             
TFORM2  = '1E      '           /data format of field: 4-byte REAL               
TUNIT2  = 'counts  '           /physical unit of field                          
EXTNAME = 'Archive Map Table'  /name of this binary table extension             
DATE    = '2003-11-18T00:00:00' /Table creation date                            
PIXTYPE = 'HEALPIX '           /Pixel algorithm                                 
ORDERING= 'NESTED  '           /Ordering scheme                                 
NSIDE   =                  512 /Resolution parameter                            
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =              3145727 /Last pixel (0 based)                            
COMMENT   The TEMPERATURE field is antenna temperature.                         
COMMENT   N_obs is set to 1 for all pixels. The N_obs field is filled           
COMMENT    only to provide a format consistent with that used by                
COMMENT    WMAP products.                                                       

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