I downloaded fits file using wget script from https://exoplanetarchive.ipac.caltech.edu/docs/datasethelp/ETSS_CoRoT.html I am not able to view the file. I tried atsromagic and DS9 . After File->Open I get an error message "..error while reading.." .It happens with both softwares. Is anyone able to view these files? If yes, which software did you use? Another possibility is that using using wget script on windows it got corrupted. Is there a command line tool to check integrity/validity of fits file?
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1$\begingroup$ Can you please specify which fits file you downloaded? $\endgroup$– samcarter_is_at_topanswers.xyzCommented Oct 25, 2019 at 8:38
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$\begingroup$ @samcarter AN2_STAR_0000000020_20070131T110634_20070402T071215.fits wget -O AN2_STAR_0000000020_20070131T110634_20070402T071215.fits . The script to download is exoplanetarchive.ipac.caltech.edu/data/ETSS/corot_astero/… -a corot_astero_IRa01_wget.log $\endgroup$– qqqqqCommented Oct 25, 2019 at 21:34
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1 Answer
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These are FITS binary tables not FITS images so the normal FITS image tools very likely won't read them. You have a couple of options to examine and manipulate them:
- Use the 'fv' tool which works on FITS images or tables (and integrates with
ds9) - Use TOPCAT, a very powerful tool for examining, plotting and many other operations on all formats of tables (not just FITS ones)
- Use Python and AstroPy Tables e.g.
from astropy.table import Table
table = Table.read('EN2_STAR_CHR_0102990364_20070206T133547_20070401T235934.fits')
table
<Table length=71042>
DATE DATEJD DATEHEL STATUS ... BG CORREC_RED CORREC_GREEN CORREC_BLUE
yyyy-mm-jjThh:mi:ss COROT JULIAN DAY COROT JULIAN DAY ... ELECTRONS ELECTRONS
bytes23 float64 float64 int32 ... float32 float32 float32 float32
----------------------- ------------------ ------------------ ------ ... --------- ---------- ------------ -----------
2007-02-06T13:35:47.000 2593.06626508258 2593.0705519515977 16 ... 373.35654 0.0 0.0 0.0
2007-02-06T13:44:19.000 2593.072191038021 2593.0764776164892 0 ... 378.81073 0.0 0.0 0.0
answered Oct 25, 2019 at 18:07
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$\begingroup$ Mentioning so that it saves other people time. I attempted to install TOPCAT. It needed JRE. But the download site of JRE seems to require an ORACLE id. I gave up at that point. $\endgroup$– qqqqqCommented Oct 28, 2019 at 23:00
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$\begingroup$ Hmm, this seems to be something Oracle have changed recently. The Open JDK should work just as well (and doesn't require signing up) $\endgroup$ Commented Oct 29, 2019 at 1:09