FITS Headers
act_dr5.01_s08s18_AA_f090_daynight_map.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 CTYPE3 = 'STOKES' / Coordinate type code 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 = 'f090 ' / Frequency tag ACTTAGS = 'daynight,prelim' / ACT data quality class COMMENT COMMENT *** ACT product keys *** COMMENT POLCCONV= 'IAU ' / Polarization convention BUNIT = 'uK ' / Physical (pixel) units EXTNAME = 'FREQ-MAP' / Extension name FILENAME= 'act_dr5.01_s08s18_AA_f090_daynight_map.fits' / FITS filename CHECKSUM= 'VV8MXT5MVT5MVT5M' / HDU checksum updated 2021-01-15T12:52:23 DATASUM = '4211985867' / data unit checksum updated 2021-01-15T12:52:23 END
