3.0

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•Last updated Sep 28, 2026

The Next Big Thing for ccdproc. It should include:

A much faster image combination mechanism.
A new image combination interface if there is ever going to be one.
Removal of deprecated bits
Update to the major version requirements (astropy, numpy, python, astroscrappy)
Clean up warnings -- several are emitted during tests

52% complete

astrometric solution for the image
astropy/ccdproc#160 · opened on Aug 5, 2014 · 3.0
5
Combiner accepting DQ arrays (bitwise value combinations)
astropy/ccdproc#389 · opened on Aug 15, 2016 · 3.0
21
Image Combine with wcs offset
astropy/ccdproc#499 · opened on May 28, 2017 · 3.0
4
transform_image wcs update
astropy/ccdproc#561 · opened on Oct 2, 2017 · 3.0
6
Possible updates to combiner class
astropy/ccdproc#569 · opened on Oct 20, 2017 · 3.0
17
Consider revising the Combiner machinery into a class heirarchy
astropy/ccdproc#578 · opened on Oct 23, 2017 · 3.0
2
Sigma clipping is painfully slow
astropy/ccdproc#624 · opened on Jun 4, 2018 · 3.0
11
Performance: Combining flats is slow
astropy/ccdproc#645 · opened on Aug 21, 2018 · 3.0
2
Using reproject_exact in wcs_project
astropy/ccdproc#665 · opened on Mar 27, 2019 · 3.0
1
Make handling of MEF files easier
astropy/ccdproc#695 · opened on Aug 3, 2019 · 3.0
2
No way to reject outlierss in doing overscan fit
astropy/ccdproc#722 · opened on Dec 24, 2019 · 3.0
Allow specification of FITS suffixes in ImageFileCollection
Unread
#727 opened Jan 29, 2020 · Updated Jan 19, 2022
3
A workaround for unfixable header keys in ImageFileCollection
Unread
#743 opened Aug 11, 2020 · Updated Aug 9, 2023
6
Refactor validation logic in combiner
Task
astropy/ccdproc#903 · opened on Jul 30, 2025 · 3.0
Move pytest fixtures into conftest.py
astropy/ccdproc#905 · opened on Jul 31, 2025 · 3.0
Array API: locate the source of __array__(copy=...) DeprecationWarnings in CuPy runs
astropy/ccdproc#934 · opened on Jul 7, 2026 · 3.0
Add sparse test backend as a densification detector (and eventual supported library)
astropy/ccdproc#938 · opened on Jul 7, 2026 · 3.0
Tracking: upstream array-API blockers (astropy, reproject, astroscrappy)
astropy/ccdproc#940 · opened on Jul 7, 2026 · 3.0

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3.0

astrometric solution for the image

Combiner accepting DQ arrays (bitwise value combinations)

Image Combine with wcs offset

transform_image wcs update

Possible updates to combiner class

Consider revising the Combiner machinery into a class heirarchy

Sigma clipping is painfully slow

Performance: Combining flats is slow

Using reproject_exact in wcs_project

Make handling of MEF files easier

No way to reject outlierss in doing overscan fit

Allow specification of FITS suffixes in `ImageFileCollection`

A workaround for unfixable header keys in ImageFileCollection

Refactor validation logic in combiner

Move pytest fixtures into conftest.py

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

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

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

Issues