How to open axy.fits wcs.fits in IRAF

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Anu TK

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Jan 12, 2023, 2:16:06 AM1/12/23
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Can anyone help me with opening these files in IRAF or any other tools?

Dustin Lang

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Jan 13, 2023, 9:06:24 AM1/13/23
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I don't know about IRAF, but for other tools:

if you have the Astrometry.net software installed, or the CFITSIO tools, you can use
"listhead" to print the headers of these files, or
"tablist" to print the table contents.

axy.fits files are tables of X,Y coordinates.  They have a few headers, but probably not anything you're interested in.
wcs.fits files are purely headers.  Can you open these up in a text editor or "cat" them if you're in a terminal.  FITS files use 80-character-long lines, and they don't have newlines at the end, so it will look best if you set your window to be 80 (or 160) characters wide!

If you use Python, you can also use either the Astropy or fitsio libraries to open these files.

cheers,
dustin
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