FITS Headers
act_dr4.01_s15_D8_pa3_f090_nohwp_night_3pass_4way_set1_srcs.fits
Primary Header
SIMPLE = T / conforms to FITS standard
BITPIX = -32 / array data type
NAXIS = 3 / number of array dimensions
NAXIS1 = 3728
NAXIS2 = 2531
NAXIS3 = 3
CRPIX1 = 1864.5 / Pixel coordinate of reference point
CRPIX2 = 6276.0 / Pixel coordinate of reference point
CRPIX3 = 1.0 / Pixel coordinate of reference point, Stokes T
CDELT1 = -0.00833333333333 / [deg] Coordinate increment at reference point
CDELT2 = 0.00833333333333 / [deg] Coordinate increment at reference point
CDELT3 = 1.0 / Stokes component increment
CUNIT1 = 'deg' / Units of coordinate increment and value
CUNIT2 = 'deg' / Units of coordinate increment and value
CUNIT3 = ''
CTYPE1 = 'RA---CAR' / Right ascension, plate caree projection
CTYPE2 = 'DEC--CAR' / Declination, plate caree projection
CTYPE3 = 'STOKES ' / I,Q,U Stokes components
CRVAL1 = 2.62916666667 / [deg] Coordinate value at reference point
CRVAL2 = 0.0 / [deg] Coordinate value at reference point
CRVAL3 = 1.0 / Coordinate value at reference point, Stokes T
LONPOLE = 0.0 / [deg] Native longitude of celestial pole
LATPOLE = 90.0 / [deg] Native latitude of celestial pole
RADESYS = 'ICRS' / Equatorial coordinate system
COMMENT
COMMENT *** ACT dataset keys ***
COMMENT
TELESCOP= 'act '
INSTRUME= 'actpol '
RELEASE = 'dr4.01 ' / Data release tag
SEASON = 's15 ' / Observation season
PATCH = 'D8 ' / Survey patch
ARRAY = 'pa3 ' / Telescope array
FREQ = 'f090 ' / Frequency tag
COMMENT
COMMENT *** ACT product keys ***
COMMENT
POLCCONV= 'IAU ' / Polarization convention
BUNIT = 'uK ' / Physical (pixel) units
EXTNAME = 'FREQ-MAP' / Extension name
FILENAME= 'act_dr4.01_s15_D8_pa3_f090_nohwp_night_3pass_4way_set1_srcs.fits' / F
CHECKSUM= '0TXK2SVI0SVI0SVI' / HDU checksum updated 2020-06-30T07:41:09
DATASUM = '86470567' / data unit checksum updated 2020-06-30T07:41:09
END