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Published September 28, 2021 | Version 3.3.0
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spacetelescope/drizzlepac: Drizzlepac v3.3.0

Authors/Creators

  • 1. Space Telescope Science Institute
  • 2. STScI
  • 3. AstronomyWorks
  • 4. University of South Carolina

Description

This version includes all the functionality needed to generate source catalogs, both point source and extended (segment) source catalogs, during single-visit mosaic (SVM) processing. The changes include many bug fixes along with the following significant changes:

  • Updated code to work with Python >= 3.7
  • GAIAeDR3 catalog now the initial catalog of choice for a posteriori alignment during standard pipeline processing, as well as for SVM/MVM processing.
  • SVM/MVM processing will loop over catalogs, fit methods and fit geometries in looking for a successful fit, using the first successful fit it computes.
    • CATALOGS used: GAIAeDR3, GSC242, 2MASS (in this order)
    • methods: relative, image-by-image
    • geometries: rscale, rshift, shift (each with different minimum cross-matches)
  • SVM processing will always generate both point source and extended source catalogs, even if the catalogs contain no rows of sources and measurements.
    • point source catalog will be generated using TinyTim PSF-based detection
    • extended source (segment) catalog will only have sources larger than the PSF kernel deblended.
    • catalog columns will closely resemble the Hubble Legacy Archive (HLA) catalogs columns
  • Grism/Prism exposures do not get aligned, but instead get the WCS correction from direct images
  • Added logic to handle visits where there are only Grism/Prism exposures with no direct images
  • S_REGION keyword:
    • added to FLT/FLC file headers
    • revised region computation to match closely the actual exposure footprint within mosaic
  • Always runs updatewcs on input files to insure pipeline-default WCSs are always present
    • Add WCSNAME=OPUS if no IDCTAB WCS was created by updatewcs (NGOODPIX=0, ...).

Files

spacetelescope/drizzlepac-3.3.0.zip

Files (9.0 MB)

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Additional details

Related works

Is supplement to
https://github.com/spacetelescope/drizzlepac/tree/3.3.0 (URL)