[task #16253] Warp: let the user determine the output projection CTYPE

[Pedram Ashofteh Ardakani]

URL:
  <https://savannah.gnu.org/task/?16253>

                 Summary: Warp: let the user determine the output projection
CTYPE
                 Project: GNU Astronomy Utilities
               Submitter: pedram
               Submitted: Fri 09 Sep 2022 07:46:32 AM UTC
         Should Start On: Fri 09 Sep 2022 12:00:00 AM UTC
   Should be Finished on: Fri 09 Sep 2022 12:00:00 AM UTC
                Category: Warp
                Priority: 5 - Normal
              Item Group: New feature
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: pedram
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00


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Follow-up Comments:


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Date: Fri 09 Sep 2022 07:46:32 AM UTC By: Pedram Ashofteh Ardakani <pedram>
Until now, we had no means to alter the output image projection type. However,
the new 'celestial align' function can handle this task.

As Mohammad points out, we can let the user determine the output image
projection type. The default should be set to *TAN*.

> Now that things are progressing nicely, also add an option to let the user
specify the desired output projection! By default, it can be TAN, which
everyone is use to, but thanks to WCSLIB, we can now have many other
projections! You can get the exact string value from the user (with a name
like --alignctype, since it sets the CTYPE keyword), and feed that directly to
gal_wcs_create. The default value (in astwarp.conf can be RA---TAN and
DEC--TAN, but the user can set anything they want (and WCSLIB accepts 







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