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  1. Data Management
  2. DM-30993

Investigate prospects for making use of fluxMag0T1 for ref/src catalog culling

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    • Team:
      Data Release Production
    • Urgent?:
      No

      Description

      The reference catalogs loaded for the astrometric calibration often span a magnitude range quite different than that of the icSrc catalog to which it is matched. Trimming both catalogs to a roughly similar magnitude range would make the job of WCS matcher/fitters easier and less prone to the bad matches that can lead to terrible WCS fits (see DM-30466 for examples & discussion). Cutting on magnitude at this stage is potentially dangerous as we do not have a calibrated zeropoint. However, if we feel for a given dataset that we can trust the per-band calibrated config values for fluxMag0T1, the "approximate flux of a zero-magnitude object in a one-second exposure, per filter." to a reasonable extent, some gains could potentially be made. This ticket is to explore this possibility in the context of HSC and DC2 data.

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            Assignee:
            lauren Lauren MacArthur
            Reporter:
            lauren Lauren MacArthur
            Watchers:
            Eli Rykoff, John Parejko, Lauren MacArthur, Meredith Rawls
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