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  1. Data Management
  2. DM-6923

Apply distortion when searching for astrometric reference objects

    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: meas_astrom
    • Labels:
      None
    • Templates:
    • Story Points:
      1
    • Epic Link:
    • Sprint:
      DRP F16-3
    • Team:
      Data Release Production

      Description

      While investigating DM-6529 I found that LSST generally finds fewer reference objects than HSC when doing astrometry. For the CCDs on the edge of the focal plane the number of stars was typically very low causing frequent failures. I found that in the HSC code, there is a distortion being applied that shifts the exposure bounding box when getting objects from the reference catalog. This distortion is not being applied in the LSST code.

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                • Assignee:
                  rearmstr Bob Armstrong
                  Reporter:
                  rearmstr Bob Armstrong
                  Watchers:
                  Bob Armstrong, John Swinbank, Russell Owen
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                    Updated:
                    Resolved:

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