Description When using sigma_clip() on a MaskedNDArray (or MaskedQuantity) with numpy 1.24.0 or later, it raised a TypeError: cannot write to unmasked output. When using numpy 1.23.5, the codes no longer raised TypeError but sigma_clip() seems to ignore the mask in the input. Expected behavior N...

Description When reading MRT files (formatted according to the CDS standard which is also the format recommended by AAS/ApJ) with format='ascii.cds', astropy.table incorrectly parses composite units. According to CDS standard the units should be SI without spaces (http://vizier.u-strasbg.fr/doc/cats...

See: OpenAstronomy/github-actions-workflows#105 Might be related: codecov/codecov-action#598 However, CircleCI upload somehow succeeds, so now our codecov erroneously reports only 33% coverage. astropy/.circleci/config.yml Lines 89 to 90 in 3510bc2...

Description E.g. have this paper from MNRAS, from which I would like table2: https://academic.oup.com/mnras/article/491/4/4925/5634279 It has id='tbl2', so one would think the line should work: from astropy.io import ascii ascii.read('https://academic.oup.com/mnras/article/491/4/4925/5634279', htmld...

astropy/pyproject.toml Lines 75 to 76 in 3510bc2 [tool.ruff] line-length = 88

What is the problem this feature will solve? We are using existing and are developing new data formats based on FITS, which prescribe time formats. At the moment, conversion from astropy.time.Time to the FITS representation needs to be done "by hand", since astropy only supports storing times as two...

What is the problem this feature will solve? The astropy.io.fits.fitstime is not documented in the API docs Describe the desired outcome Include it in the API docs Additional context No response

Description Not sure if this is a feature request or a bug fix because in some cases is possible and in others not. Also, apologies if somewhat it is possible, the docs do not have explicit examples of this. Creating a QTable an adding/transforming units after its creation (like any Quantity) seems...

Description Depending on my x value input sometimes, the y value of my convolved functions will give strange results. Expected behavior I expect the value of the convolved models not to depend on input x, since I've defined analytic functions (astropy.models) inputs to the convolve_models functi...

Description I'm reading a FITS file with field that has units of DN. On doing so I get this warning: chandra_aca/tests/test_maude_decom.py::test_vcdu_vs_level0 /Users/aldcroft/miniconda3/envs/ska3-flight-2023.1rc4/lib/python3.10/site-packages/astropy/units/core.py:2097: UnitsWarning: 'DN' di...