FITS Headers
act_dr5.01_s08s18_AA_f220_daynight_ivar.fits
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 = 'f220 ' / 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_f220_daynight_ivar.fits' / FITS filename
CHECKSUM= 'DfaYEeVWDeaWDeUW' / HDU checksum updated 2021-01-15T12:54:19
DATASUM = '3469692594' / data unit checksum updated 2021-01-15T12:54:19
END