Hello,

I am trying to extract data from a binary FITS file. The header looks like:

SIMPLE = T /file does conform to FITS standard

BITPIX = -32 /bits per data value

NAXIS = 4 /number of data axes

NAXIS1 = 256 /size of the axis

NAXIS2 = 256 /size of the axis

NAXIS3 = 1 /size of the axis

NAXIS4 = 1 /size of the axis

BUNIT = ‘JY/BEAM’ /Units of data

WCSNAME = ‘’ /Coordinate system name

WCSAXES = 4 /WCS dimensionality

CTYPE1 = ‘RA—TAN’ /Type of coordinate axis

CRVAL1 = 1.0700000000000E+01 /Reference value along axis

CDELT1 = -1.5000000000000E-02 /Pixel spacing along axis

CRPIX1 = 1.2800000000000E+02 /Reference pixel along axis

CUNIT1 = ‘’ /units of coord. values

CTYPE2 = ‘DEC–TAN’ /Type of coordinate axis

CRVAL2 = 4.1280000000000E+01 /Reference value along axis

CDELT2 = 1.5000000000000E-02 /Pixel spacing along axis

CRPIX2 = 1.2800000000000E+02 /Reference pixel along axis

CUNIT2 = ‘’ /units of coord. values

CTYPE3 = ‘FREQ’ /Type of coordinate axis

CRVAL3 = 6.6251892089844E+09 /Reference value along axis

CDELT3 = 1.2506103515625E+09 /Pixel spacing along axis

CRPIX3 = 1.0000000000000E+00 /Reference pixel along axis

CUNIT3 = ‘’ /units of coord. values

CTYPE4 = ‘STOKES’ /Type of coordinate axis

CRVAL4 = 1.0000000000000E+00 /Reference value along axis

CDELT4 = 1.0000000000000E+00 /Pixel spacing along axis

CRPIX4 = 1.0000000000000E+00 /Reference pixel along axis

CUNIT4 = ‘’ /units of coord. values

PC1_1 = 1.0000000000000E+00 /Transformation matrix element

PC2_1 = 0.0000000000000E+00 /Transformation matrix element

PC3_1 = 0.0000000000000E+00 /Transformation matrix element

PC4_1 = 0.0000000000000E+00 /Transformation matrix element

PC1_2 = 0.0000000000000E+00 /Transformation matrix element

PC2_2 = 1.0000000000000E+00 /Transformation matrix element

PC3_2 = 0.0000000000000E+00 /Transformation matrix element

PC4_2 = 0.0000000000000E+00 /Transformation matrix element

PC1_3 = 0.0000000000000E+00 /Transformation matrix element

PC2_3 = 0.0000000000000E+00 /Transformation matrix element

PC3_3 = 1.0000000000000E+00 /Transformation matrix element

PC4_3 = 0.0000000000000E+00 /Transformation matrix element

PC1_4 = 0.0000000000000E+00 /Transformation matrix element

PC2_4 = 0.0000000000000E+00 /Transformation matrix element

PC3_4 = 0.0000000000000E+00 /Transformation matrix element

PC4_4 = 1.0000000000000E+00 /Transformation matrix element

EQUINOX = 2.0000000000000E+03 /Equinox of equatorial coordinates

INSTRUME= ‘SRT’ /

FRAME = ‘EQ’ /

MINELE = 5.1408972590790E+01 /

MAXELE = 7.5454308414980E+01 /

MINAZI = 2.7738512539560E+02 /

MAXAZI = 2.9212810099520E+02 /

MINTIME = 5.7566295501250E+04 /

MAXTIME = 5.7566375033940E+04 /

MINUT = 7.0920300000580E+00 /

MAXUT = 9.0008145599859E+00 /

COMMENT --------------------------------------------------------------------

COMMENT The Sardinia Radio Telescope (SRT) is funded by the Ministry of

COMMENT University and Research (MIUR), Italian Space Agency (ASI), the

COMMENT Autonomous Region of Sardinia (RAS), the European Union (EU) and is

COMMENT operated for the National Institute for Astrophysics (INAF) by

COMMENT Cagliari Observatory (OAC)

COMMENT

COMMENT Telescope : Sardinia Radio Telescope

COMMENT Project : S0007

COMMENT Project P.I. : Prof. Elia Stefano Battistelli

COMMENT Map Reference: Fatigoni S. et al. 2021

COMMENT DOI: https://doi.org/10.1051/0004-6361/202040011

COMMENT

COMMENT FITS (Flexible Image Transport System) format is defined in ‘Astronomy

COMMENT and Astrophysics’, volume 376, page 359; bibcode: 2001A&A…376…359H

COMMENT This FITS file has been created by SIproject version 19AGO2018

COMMENT Creation date: Sat Nov 10 12:08:07 2018

END

Has anyone worked out how to extract the data from FITS? Bit off topic. It is a small file and a FITS viewer clearly shows data values.

Cheers

Lester