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  1. Data Management
  2. DM-17605

Implement S matrix normalization in scarlet

    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: meas_deblender
    • Labels:
      None
    • Templates:
    • Story Points:
      1
    • Sprint:
      DRP S19-2
    • Team:
      Data Release Production

      Description

      To deblend crowded fields it is useful to model stars as a single point convolved with the PSF. Through experimentation Peter Melchior and I discovered that normalizing the A matrix (colors) causes too much variation in the S matrix (morphology) updates. Instead it appears that normalizing the S matrix (and fixing a single pixel) for point sources and allowing the A matrix to encode both SED and intensity information works better.

      This ticket is to give users the option to use either A matrix or S matrix normalization for each source.

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            • Assignee:
              fred3m Fred Moolekamp
              Reporter:
              fred3m Fred Moolekamp
              Watchers:
              Fred Moolekamp
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