Issues

• Median dispatch trusts any namespace's median/nanmedian; torch's has different semantics

  astropy/ccdproc#1036 · Filter by author mwcraig opened on Sep 28, 2026

• Use array_api_extra.testing assertions in the test suite

  astropy/ccdproc#1035 · Filter by author mwcraig opened on Sep 28, 2026

• array-api-strict: subtract_overscan and cosmicray_lacosmic(gain_apply=True) fail on integer data

  astropy/ccdproc#1034 · Filter by author mwcraig opened on Sep 28, 2026

• tox test environments import ccdproc from the source tree, not the installed package

  astropy/ccdproc#1033 · Filter by author mwcraig opened on Sep 27, 2026

• cosmicray_median rejects a scalar error_image when the image is a CCDData

  astropy/ccdproc#1030 · Filter by author mwcraig opened on Sep 27, 2026

• Revisit the np.median size-0 tuple-axis workaround in test_nanfuncs now that numpy#32535 is fixed

  astropy/ccdproc#1026 · Filter by author mwcraig opened on Sep 27, 2026

• Arrays copied back from a host round trip lose the input's dask chunking

  astropy/ccdproc#1022 · Filter by author mwcraig opened on Sep 25, 2026
  3

• _to_numpy cannot copy CuPy arrays to the host

  astropy/ccdproc#1021 · Filter by author mwcraig opened on Sep 25, 2026
  2

• Decide whether jax without JAX_ENABLE_X64 is a supported test configuration

  astropy/ccdproc#1020 · Filter by author mwcraig opened on Sep 25, 2026
  2

• Complex input to the _nanfuncs reductions loses its imaginary part on non-NumPy backends

  bug
  astropy/ccdproc#1016 · Filter by author mwcraig opened on Sep 11, 2026
  2

• Consider promoting the _to_xp test helper to a shared fixture

  astropy/ccdproc#1015 · Filter by author mwcraig opened on Sep 10, 2026

• docs: array_api.rst limitations section is turning into a changelog; restructure after the array-API PRs land

  docs
  astropy/ccdproc#1014 · Filter by author mwcraig opened on Sep 10, 2026

• subtract_dark(scale=True) promotes float32 inputs to float64; scale=False does not

  astropy/ccdproc#1013 · Filter by author mwcraig opened on Sep 10, 2026

• combine(): uncertainty and mask always allocated at full output size regardless of mem_limit, and each tile re-reads whole input files

  astropy/ccdproc#1012 · Filter by author mwcraig opened on Sep 10, 2026
  1

• Combiner.sigma_clipping: low_thresh/high_thresh docstring no longer matches behaviour (None means 3σ, negatives are not abs()-ed)

  astropy/ccdproc#1002 · Filter by author mwcraig opened on Aug 27, 2026

• Exclude masked pixels from the median filter in cosmicray_median

  astropy/ccdproc#984 · Filter by author mwcraig opened on Aug 23, 2026

• Consider marray as a uniform masked-array representation across array backends

  astropy/ccdproc#983 · Filter by author mwcraig opened on Aug 23, 2026

• Tracking: remaining work for the array-API migration

  astropy/ccdproc#971 · Filter by author mwcraig opened on Aug 22, 2026
  6

• Refactor _escape_triage.py: split concerns and register pytest hooks explicitly

  tests
  astropy/ccdproc#947 · Filter by author mwcraig opened on Jul 14, 2026

• Escape-baseline keys are fragile across Python versions (comprehension frame names, PEP 709)

  bugtests
  astropy/ccdproc#945 · Filter by author mwcraig opened on Jul 14, 2026

• Tracking: upstream array-API blockers (astropy, reproject, astroscrappy)

  Upstream fix required
  astropy/ccdproc#940 · Filter by author mwcraig opened on Jul 7, 2026 · 3.0

• Add sparse test backend as a densification detector (and eventual supported library)

  enhancementtests
  astropy/ccdproc#938 · Filter by author mwcraig opened on Jul 7, 2026 · 3.0

• Array API: locate the source of __array__(copy=...) DeprecationWarnings in CuPy runs

  bugtests
  astropy/ccdproc#934 · Filter by author mwcraig opened on Jul 7, 2026 · 3.0

• CuPy issues in test_image_collection

  astropy/ccdproc#913 · Filter by author mwcraig opened on Sep 4, 2025

• CuPy issues in test_cosmicray

  astropy/ccdproc#912 · Filter by author mwcraig opened on Sep 4, 2025