FITS Headers
firas_hpx_stripe_templates_hif4.fits
Primary Header
SIMPLE = T / Written by IDL: Fri Oct 26 12:11:20 2018
BITPIX = 8 / number of bits per data pixel
NAXIS = 0 / number of data axes
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format defined in Astronomy and
COMMENT Astrophysics Supplement Series v44/p363, v44/p371, v73/p359, v73/p365.
COMMENT Contact the NASA Science Office of Standards and Technology for the
COMMENT FITS Definition document #100 and other FITS information.
DATE = '2007-01-03' / FITS file creation date (yyyy-mm-dd)
ORIGIN = 'LAMBDA ' / Legacy Archive for Microwave Background Data
COMMENT / Analysis
TELESCOP= 'COBE ' / COsmic Background Explorer satellite
INSTRUME= 'FIRAS ' / COBE instrument [DIRBE, DMR, FIRAS]
OBJECT = 'ALL-SKY ' / part of sky given [ALL-SKY, GAL-SLICE]
PRODUCT = 'STRIPE-TEMPLATES' / Stripe templates
EQUINOX = 2000.00 / equinox of coords in following tables
COMMENT
REFERENC= 'For additional information, please refer to the' /
REFERENC= 'COBE Far Infrared Absolute Spectrophotometer (FIRAS)' /
REFERENC= 'Explanatory Supplement, ed. J.C. Mather et al,' /
REFERENC= 'COBE Ref. Pub. No. 97-C (Greenbelt, MD: NASA/GSFC),' /
REFERENC= 'available in electronic form from the NSSDC and LAMBDA.' /
COMMENT
COMMENT HEALPix specific keywords
PIXTYPE = 'HEALPIX ' / Pixel algorithm
ORDERING= 'NESTED ' / Ordering scheme
RESOLUTN= 4 / Resolution index
NSIDE = 16 / Resolution parameter
NPIX = 3072 / # of pixels
FIRSTPIX= 0 / First pixel (0 based)
LASTPIX = 3071 / Last pixel (0 based)
COMMENT
COMMENT COBE specific keywords
DATE-BEG= '24/11/89' / date of initial data represented (dd/mm/yy)
DATE-END= '21/09/90' / date of final data represented (dd/mm/yy)
COMMENT
COMMENT FIRAS specific keywords
CHANSCAN= 'HIF4 ' / Field indicating combination of data from
COMMENT / various channels and mirror transport
COMMENT / mechanism scan modes. LOWF is a combination
COMMENT / of the low frequency RLSS, RLFS, RLFL, LLSS,
COMMENT / LLFS, and LLFL data. HIGH is a combination of
COMMENT / the high frequency RHSS, RHSF, RHLF, LHSS,
COMMENT / LHSF, and LHLF data. HIF2, HIF3, and HIF4
COMMENT / divide the HIGH data into three frequency
COMMENT / bands, as indicated by the NU_ZERO and
COMMENT / NUM_FREQ fields. HRES is a combination of the
COMMENT / high resolution RLLF and LLLF data. For the
COMMENT / uncombined channel/scan mode labels, the first
COMMENT / two characters of the label indicate the
COMMENT / channel, the first being the instrument side:
COMMENT / right (R) or left (L); and the second being
COMMENT / the frequency: high (H) or low (L). The
COMMENT / third and fourth characters indicate the scan
COMMENT / mode, the third being the scan length: short
COMMENT / (S) or long (L); and the fourth being the scan
COMMENT / speed: slow (S) or fast (F). In addition,
COMMENT / the scan mode may take the following values
COMMENT / for low frequency data only (channel = RL or
COMMENT / LL):
COMMENT / FS: decimated SF data;
COMMENT / FL: truncated LF data.
MODLLABL= 'PASS4 ' / FIRAS calibration model solution label
MISS_SEG= 'ENTIRE_MISSION' / FIRAS segment of mission represented
NU_ZERO = 2108.64510000 / Optical frequency of initial data point in GHz
DELTA_NU= 13.6041620000 / Optical frequency interval between data points
COMMENT / in GHz
NUM_FREQ= 60 / Number of frequency points with good data
COMMENT
COMMENT The data are stored in two extension tables. The first contains the
COMMENT stripe identifier field (one row for each stripe) and the second
COMMENT contains the detector/scan mode field and the stripe template field
COMMENT (one row for each sky coadd).
END
Extension Header 2
XTENSION= 'BINTABLE' / Extension type is Binary Table
BITPIX = 8 / Binary data
NAXIS = 2 / Data are in a table
NAXIS1 = 40 / Number of 8 bit bytes in each row
NAXIS2 = 9 / Number of rows
PCOUNT = 0 / Number of bytes of data following table
GCOUNT = 1 / Group count (always 1 for bintable extensions)
TFIELDS = 1 / Number of fields (columns) in the table
COMMENT Stripe Identifier
TFORM1 = '40A ' /
TTYPE1 = 'STR_ID ' / entire fieldname = STR_ID
TUNIT1 = ' ' /
END
Extension Header 3
XTENSION= 'BINTABLE' / Extension type is Binary Table
BITPIX = 8 / Binary data
NAXIS = 2 / Data are in a table
NAXIS1 = 40 / Number of 8 bit bytes in each row
NAXIS2 = 136794 / Number of rows
PCOUNT = 0 / Number of bytes of data following table
GCOUNT = 1 / Group count (always 1 for bintable extensions)
TFIELDS = 2 / Number of fields (columns) in the table
COMMENT Detector/Scan Mode ('LHSS','RHSS','LHLF','LHSF','RHLF', or 'RHSF')
TFORM1 = '4A ' /
TTYPE1 = 'DET_MODE ' / entire fieldname = DET_MODE
TUNIT1 = ' ' /
COMMENT Stripe Template
TFORM2 = '9E ' /
TDIM2 = '(9) ' /
TTYPE2 = 'STR_TEMPLATE ' / entire fieldname = STR_TEMPLATE
TUNIT2 = ' ' /
END
