The portion of the JWST tweakreg step that does the actual tweakreg part (as opposed to source finding) performs an identical task to its counterpart in Roman. Because of that, it's sensible to move this piece of code into stcal to avoid duplicating code and to ensure any bugfixes or improvements benefit both telescopes. As a recent example, some memory optimizations to the step have been made by Brett Graham that exist only on the JWST side at present.
The stcal ticket covers the work in that repository. On the JWST side, the stcal version of tweakreg will simply need to be called within the existing framework of the tweakreg step.
Issue JP-3668 was created on JIRA by Ned Molter:
The portion of the JWST tweakreg step that does the actual tweakreg part (as opposed to source finding) performs an identical task to its counterpart in Roman. Because of that, it's sensible to move this piece of code into stcal to avoid duplicating code and to ensure any bugfixes or improvements benefit both telescopes. As a recent example, some memory optimizations to the step have been made by Brett Graham that exist only on the JWST side at present.
The stcal ticket covers the work in that repository. On the JWST side, the stcal version of tweakreg will simply need to be called within the existing framework of the tweakreg step.