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  1. LSST Verification and Validation
  2. LVV-10983

Ghosts and scattered light in coadds

    Details

    • Success Criteria:
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      In a selection of single-visit images that are substantially affected by ghosts and scattered light, it should be verified that the scattered is removed from the coadded image. The weight plane of the image should be modified in a consistent way. It should be checked to what extent the photometry of coadd objects are affected, and if spurious coadd objects appear in the catalog that are not flagged and easily removed.

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      In a selection of single-visit images that are substantially affected by ghosts and scattered light, it should be verified that the scattered is removed from the coadded image. The weight plane of the image should be modified in a consistent way. It should be checked to what extent the photometry of coadd objects are affected, and if spurious coadd objects appear in the catalog that are not flagged and easily removed.
    • Verification Method:
      Analysis
    • Post Validation Actions:
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      If substantial amounts of the coadded images are affected by scattered light, the algorithm which identifies and removes scattered light from the coadds should be revisited and parameters tuned as needed.

      If there are large numbers of spurious and/or highly affected coadd objects, these should be flagged or otherwise document caveats.

      Show
      If substantial amounts of the coadded images are affected by scattered light, the algorithm which identifies and removes scattered light from the coadds should be revisited and parameters tuned as needed. If there are large numbers of spurious and/or highly affected coadd objects, these should be flagged or otherwise document caveats.

      Description

      DRAFT PLACEHOLDER

      This is the coadd version of Ghost Image Control (OSS-REQ-0222).

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            • Assignee:
              lguy Leanne Guy
              Reporter:
              kbechtol Keith Bechtol
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              • Created:
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