FITS Headers


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               
COMMENT  FITS (Flexible Image Transport System) format is defined in Astronomy  
COMMENT  and Astrophysics, volume 376, page 359; bibcode: 2001A&A...376..359H   
DATE    = '2019-03-22T00:00:00' /file creation date (YYYY-MM-DDThh:mm:ss UT)    
COMMENT   This file contains data from the Landecker and Wielebinski 150 MHz    
COMMENT   radio continuum all-sky map. Data for delta > 25 deg are extrapolated 
COMMENT   from 178 MHz (Turtle & Baldwin 1962, MNRAS 124, 297). Data for delta  
COMMENT   < -25 deg are extrapolated from 85 MHz (Yates et al. 1967, Aust. J.   
COMMENT   Phys., 21, 185). The data in Galactic coordinates were obtained from  
COMMENT   the Max Planck Institute for Radio Astronomy Survey Sampler website   
COMMENT   and interpolated to a Galactic coordinate HEALPix projection.         
COMMENT   This file is distributed and maintained by LAMBDA.                    
COMMENT  "The Galactic Metre Wave Radiation: A two-frequency survey between     
COMMENT  declinations +25deg and -25deg and the preparation of a map of the     
COMMENT  whole sky", Landecker & Wielebinski 1970, Aust. J. Phys. Suppl., 16, 1 
COMMENT  MPIfR page: http://www3.mpifr-bonn.mpg.de/survey.html                  
COMMENT  HEALPix Home Page: https://healpix.jpl.nasa.gov/                       
FREQ    = '150 MHz '           /Center Frequency                                
RESOLUTN=                    8 /Resolution index                                
SKYCOORD= 'Galactic'           /Coordinate System                               
PIXTYPE = 'HEALPIX '           /Pixel algorithm                                 
ORDERING= 'NESTED  '           /Ordering scheme                                 
NSIDE   =                  256 /Resolution parameter                            
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =               786431 /Last pixel (0 based)                            
BMAJ    =              5.00000 /[deg] Beam major axis FWHM                      
BMIN    =              5.00000 /[deg] Beam minor axis FWHM                      
BUNIT   = 'K TB    '           /                                                

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  =               786432 /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  = 'K       '           /physical unit of field 1                        
TTYPE2  = 'N_OBS   '           /label for field 2                               
TFORM2  = '1E      '           /data format of field: 4-byte REAL               
TUNIT2  = 'counts  '           /physical unit of field 2                        
EXTNAME = 'Archive Map Table'  /name of this binary table extension             
PIXTYPE = 'HEALPIX '           /Pixel algorigthm                                
ORDERING= 'NESTED  '           /Ordering scheme                                 
NSIDE   =                  256 /Resolution parameter                            
FIRSTPIX=                    0 /First pixel (0 based)                           
LASTPIX =               786431 /Last pixel (0 based)                            
COMMENT  The TEMPERATURE field is brightness temperature in K.                  
COMMENT  N_obs is set to 1 for all pixels.                                      

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