[bug #63345] WCS coordinate change not accounting for new equinox

[Mohammad Akhlaghi]

URL:
  <https://savannah.gnu.org/bugs/?63345>

                 Summary: WCS coordinate change not accounting for new equinox
                 Project: GNU Astronomy Utilities
               Submitter: makhlaghi
               Submitted: Fri 11 Nov 2022 01:03:57 PM UTC
                Category: Libraries
                Severity: 3 - Normal
              Item Group: Output not reasonable
                  Status: In Progress
                 Privacy: Public
             Assigned to: makhlaghi
             Open/Closed: Open
         Discussion Lock: Any


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Follow-up Comments:


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Date: Fri 11 Nov 2022 01:03:57 PM UTC By: Mohammad Akhlaghi <makhlaghi>
[[Originally submitted by Alex in bug-gnuastro
<https://lists.gnu.org/archive/html/bug-gnuastro/2022-11/msg00000.html>, see
there for the data]]

I am trying to transform the coordinate system of a WCS from B1950 to J2000
using Gnuastro 0.19, wcslib 7.12. The original fits file is attached. When I
run the following command:


astfits -h1 NGC6946_scaled.fits --wcscoordsys=eq-j2000 


The new fits file (NGC6946_scaled-eq-j2000.fits, also attached) contains the
same header, without any changes. ec-j2000 works, so I guess that the
installation is ok, but that is not the system I need. I am doing something
wrong?







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