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[fitsbits] fitsverify and "implied" table columns themselves...?
We're writing radio data in binary tables, and fitsverify hates them:
133) fitsverify /share/pdata1/pdev/x108.20080826.b0s1g0. 00800.fits fitsverify 4.13 (CFITSIO V3.090) -------------------------------- File: /share/pdata1/pdev/x108.20080826.b0s1g0.00800.fits 2 Header-Data Units in this file. =================== HDU 1: Primary Array =================== 16 header keywords Null data array; NAXIS = 0 =================== HDU 2: BINARY Table ==================== *** Error: Keyword #29, CTYPE1 is not allowed in the Bin/ASCII table. *** Error: Keyword #31, CTYPE2 is not allowed in the Bin/ASCII table. *** Error: Keyword #44, CTYPE2G is not allowed in the Bin/ASCII table. .... many more similar errors Some of the WCS parameters are table columns: COMMENT axis 1 is the frequency axis TTYPE6 = 'CRVAL1 ' / Center frequency TFORM6 = '1D ' / TUNIT6 = 'Hz ' / TDISP6 = 'D13.5 ' / TTYPE7 = 'CDELT1 ' / Frequency interval TFORM7 = '1D ' / TUNIT7 = 'Hz ' / TDISP7 = 'D13.5 ' / TTYPE8 = 'CRPIX1 ' / Pixel of center frequency TFORM8 = '1D ' / TUNIT8 = ' ' / TDISP8 = 'D13.5 ' / but others are constant, so we're putting them in the table header per the "Green Bank Convention". CTYPE1 = 'FREQ ' / Type of coordinate CUNIT1 = 'Hz ' / Unit of center frequency These files are massive and written at 80 MB/s, so we really don't want to make them any bigger than they have to be. Does that really make us bad people? Or have I missed something? Thanks, -Mike -- Mike Nolan +1 787 878 2612x334 Fax: +1 787 878 1861 Arecibo Observatory, HC 3 Box 53995, Arecibo, Puerto Rico 00612 USA |
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