Imviz: AsdfInFits removal from ASDF 3.0

[braingram]

• Remove the warning ignore here (added in Catalogs: Use SDSS DR 16, fix other dev failures #2021):

jdaviz/setup.cfg

Line 105 in 71a514c

ignore:AsdfInFits has been deprecated

• Can we also revert TST: Ignore asdf_extensions deprecation warning from specutils #2035 ?

The ability to read AsdfInFits files is being moved from ASDF into stdatamodels (in part to consolidate non-pipeline code for jwst). The current plan for this move is:

• include AsdfInFits in stdatamodels: Reimplement support for ASDF-in-FITS in this package stdatamodels#110
• release a stable version of stdatamodels EDIT: see comment below on stdatamodels >1.0
• drop AsdfInFits support in ASDF 3.0: Drop support for ASDF-in-FITS asdf-format/asdf#1288

We do not have a estimate for when a stable version of stdatamodels or ASDF 3.0 will be released. We are planning to release ASDF 2.15 (which will support AsdfInFits) in the next few weeks which we will continue to support for at least 1 year (please see our proposed release and support process).

To summarize, at some point in the next year or so the following uses of AsdfInFits in jdaviz will need to be updated to use stdatamodels.

jdaviz/jdaviz/configs/imviz/plugins/parsers.py

Line 232 in 20b224e

with AsdfInFits.open(file_obj) as af:

jdaviz/jdaviz/configs/imviz/tests/test_parser.py

Line 230 in f257d71

ff = AsdfInFits(hdulist, tree)

I mentioned this to @pllim and am happy to discuss alternatives, suggestions, comments on this process and hope to make it as painless as possible.

🐱

Also see astropy/specutils#1006

[braingram]

To provide a minor update to this issue, a version of stdatamodels with AsdfInFits support has been released:
https://pypi.org/project/stdatamodels/1.1.0/
with documentation on reading and writing AsdfInFits files: https://stdatamodels.readthedocs.io/en/latest/asdf_in_fits.html