taskGNU Astronomy Utilities - Tasks: task #16256, Warp: take the output WCS from...

 
 

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task #16256: Warp: take the output WCS from another file

Submitter:  Pedram Ashofteh-Ardakani <pedram>
Submitted:  Sun 11 Sep 2022 02:39:03 PM UTC
   
 
Should Start On:  Sun 11 Sep 2022 12:00:00 AM UTC Should be Finished on:  Sun 11 Sep 2022 12:00:00 AM UTC
Category:  Warp Priority:  5 - Normal
Item Group:  New feature Status:  None
Privacy:  Public Assigned to:  pedram
Percent Complete:  100% Open/Closed:  Closed
Effort:  0.00

Mon 10 Oct 2022 09:13:07 AM UTC, comment #3: 
Pedram Ashofteh-Ardakani <pedram>
Group Member
Sun 11 Sep 2022 03:44:19 PM UTC, comment #2: 

Great! Then I'll get to this task as soon as the core 'gal_warp_align_celestial' is complete 😀

Pedram Ashofteh-Ardakani <pedram>
Group Member
Sun 11 Sep 2022 03:33:35 PM UTC, comment #1: 

Indeed! That is a good idea ;-).

Besides the example you mentioned, it does usually happen that the WCS is in another file after astrometry. So after calculating the astrometry, we have two FITS files: the image in one FITS file, and its WCS headers in another!

Currently we use Arithmetic (which also has '--wcsfile') to put the WCS headers into the image, then call SWarp. But with Warp's new '--wcsfile' option, we don't have to make that temporary file ;-).

Mohammad Akhlaghi <makhlaghi>
Group administrator
Sun 11 Sep 2022 02:39:03 PM UTC, original submission:  

Following the "modularity principle" and what Mohammad said in task 16253, I came up with the idea that the user should be able to tweak their desired WCS freely.

We already something similar as the '--wcsfile' option in 'astfits'.

This might also prove useful when we need to create 'distorted' images with specific coefficients. We'd create a WCS with the distorted profile, save it in a fits file, and ask 'warp' to create an image with those configurations!

What do you think?

Pedram Ashofteh-Ardakani <pedram>
Group Member

 

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