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  1. Data Management
  2. DM-18014

Work out math for adding reference stars to fgcmcal

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    • Story
    • Status: Done
    • Resolution: Done
    • None
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    • 2
    • DRP S19-3
    • Data Release Production

    Description

      The fgcm fitter needs to be modified to take into account reference stars.  This ticket summarizes the work on the math to compute the updated chi2 and derivative of the chi2.

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            erykoff Eli Rykoff added a comment -

            See the attached pdf for a description of how the chi2 and derivative of the chi2 are computed in the presence of a subset of stars that have calibrated reference magnitudes.

            erykoff Eli Rykoff added a comment - See the attached pdf for a description of how the chi2 and derivative of the chi2 are computed in the presence of a subset of stars that have calibrated reference magnitudes.
            erykoff Eli Rykoff added a comment -

            Turns out math was incorrect. Fixed version attached as fgcm_math3.pdf

            erykoff Eli Rykoff added a comment - Turns out math was incorrect. Fixed version attached as fgcm_math3.pdf

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              erykoff Eli Rykoff
              erykoff Eli Rykoff
              Eli Rykoff
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