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

(Up to IPP Progress Reports)

Eugene Magnier

Serge Chastel

• Monday off (Mem day)
• Installed trac watch and announcement plugins on the ipp wiki
• ipp home directory cleaning
• nebulous ingestion
• czar on Wed and Thu

Heather Flewelling

Roy Henderson

Mark Huber

• Czar Tuesday and Friday
• dealing with MD09.GR0 reprocessing and new refstack

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. We are ready for SAStest.v5
• Note: worked half of last Saturday and Memorial Day. Took holiday on Friday instead.

Chris Waters

• Vacation
• AAS Poster