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wiki:IPP_Progress_Report_20120528

Version 2 (modified by bills, 14 years ago) ( diff )

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IPP Progress Report for the week 2012-05-28 - 2012-06-01

    1. IPP Progress Report for the week 2012-05-28 - 2012-06-01
      1. Eugene Magnier
      2. Serge Chastel
      3. Heather Flewelling
      4. Roy Henderson
      5. Mark Huber
      6. Bill Sweeney
      7. Chris Waters

(Up to IPP Progress Reports)

Eugene Magnier

Serge Chastel

Heather Flewelling

Roy Henderson

Mark Huber

Bill Sweeney

  • Reported results of psphotStack photometry to DRAVG. Many questions.
    • The data shows that the psphotStack measurements based on the morphology of objects like the Kron measurements and the model fits show better results when using the unconvolved stacks.
    • There is an offset between SDSS stripe 82 psf magnitudes and psphotStack when a Gaussian psf model is used. A smaller offset results using the PS_MODEL_PS1_V1
    • The scatter in the kron magnitudes appears to be larger than with psphot. This turned out to be due to a bug in the code causing sources with bad moments to be measured.
  • Implemented and tested a feature that limits the kron integration area based on the surface brigthness of the source. With this change the kron radii are much better behaved.
  • Based on all of the above we have updated the psphot recipes and code and created a new operational tag. Time for SAStest.v5

Chris Waters

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