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FITS Header

Primary Header

SIMPLE  =                    T / conforms to FITS standard                      
BITPIX  =                  -32 / array data type                                
NAXIS   =                    3 / number of array dimensions                     
NAXIS1  =                43200                                                  
NAXIS2  =                10320                                                  
NAXIS3  =                    3                                                  
CRPIX1  =              21601.0 / Pixel coordinate of reference point            
CRPIX2  =               7561.0 / Pixel coordinate of reference point            
CRPIX3  =                  1.0 / Pixel coordinate of reference point            
CDELT1  =  -0.0083333333333333 / [deg] Coordinate increment at reference point  
CDELT2  =   0.0083333333333333 / [deg] Coordinate increment at reference point  
CDELT3  =                  1.0 / Coordinate increment at reference point        
CUNIT1  = 'deg'                / Units of coordinate increment and value        
CUNIT2  = 'deg'                / Units of coordinate increment and value        
CTYPE1  = 'RA---CAR'           / Right ascension, plate caree projection        
CTYPE2  = 'DEC--CAR'           / Declination, plate caree projection            
CRVAL1  =                  0.0 / [deg] Coordinate value at reference point      
CRVAL2  =                  0.0 / [deg] Coordinate value at reference point      
CRVAL3  =                  1.0 / Coordinate value at reference point            
LONPOLE =                  0.0 / [deg] Native longitude of celestial pole       
LATPOLE =                 90.0 / [deg] Native latitude of celestial pole        
DATEREF = '1858-11-17'         / ISO-8601 fiducial time                         
MJDREFI =                  0.0 / [d] MJD of fiducial time, integer part         
MJDREFF =                  0.0 / [d] MJD of fiducial time, fractional part      
RADESYS = 'ICRS'               / Equatorial coordinate system                   
COMMENT                                                                         
COMMENT *** ACT dataset keys ***                                                
COMMENT                                                                         
TELESCOP= 'act     '           / Telescope used                                 
INSTRUME= 'mbac+actpol'        / Instrument used                                
RELEASE = 'dr5.01  '           / Data release tag                               
SEASON  = 's08s18  '           / Observation season                             
PATCH   = 'AA      '           / Survey patch                                   
FREQ    = 'f150    '           / Frequency tag                                  
ACTTAGS = 'daynight,prelim'    / ACT data quality class                         
COMMENT                                                                         
COMMENT *** ACT product keys ***                                                
COMMENT                                                                         
POLCCONV= 'IAU     '           / Polarization convention                        
BUNIT   = 'uK^-2   '           / Physical (pixel) units                         
EXTNAME = 'IVAR-MAP'           / Extension name                                 
FILENAME= 'act_dr5.01_s08s18_AA_f150_daynight_ivar.fits' / FITS filename        
CHECKSUM= '9KeJCJdI9JdICJdI'   / HDU checksum updated 2021-01-15T12:53:31       
DATASUM = '1269076180'         / data unit checksum updated 2021-01-15T12:53:31 
END                                                                             

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