IPP Progress Report for the week YYYY.MM.DD - YYYY.MM.DD

(Up to IPP Progress Reports)

Eugene Magnier

  • worked on psphot linear fit weighting. inspired by Doug Finkbeiner in January, I implemented a model-based weighting scheme. This week, I set up a series of tests to examine the faint and bright end behavior of the 3 weighting schemes (constant, image, model) in cases where the real PSF and the fit PSF are both similar and substantially different. In the end, I concluded that (a) model and constant weights both eliminate the faint end bias; (b) when PSFs differ greatly (eg real is Gauss, fit is PS1_V1), there is a strong bright end bias for image, a modest bright end bias for model, and no bright end bias for constant. I was unable to confirm the expected higher noise of the constant weight using simulated data. I concluded that we would be better off using the constant weight and possibly suffer a small increase in noise at the bright end, rather than have the faint-end bias.
  • final build-related fixes due to changes from Ubuntu 12.04, gcc 4.6.3, Perl 5.14 (see http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/Ubuntu_1204_Build_Issues for full discussion).
  • met with David Schade, Ray Carlberg, and Severin Gaudet re: CADC in the PS1 + PS2 context.

Serge Chastel

  • Installed missing python packages on ippops1 for MWV.
  • Tidy up the ipp home directory
  • Disk usage monitoring

Heather Flewelling

  • vacation

Mark Huber

  • Czar Friday, working though postagestamp processing.
  • Durham PS1SC meeting and UK liaison visit travel.
  • SAStest.v5 chips loaded to datastore and example request for MD04 chip bundles from postagestamp server for Johannes et al.
  • Photpipe DB setup+notes for summer student working at CfA.
  • MD07 staticsky run (pre-ubercal) to be available for stack calibration stage tests (however, large percentage of staticsky faults to be tracked down still).
  • STS.refstack.20120510 finished notes to wiki, waiting to hear back from MOPS still -- http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/STS.refstack.20120510
  • Return to ppStack again -- http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/ppStack_testing_201111
    • discovered did actually delete test runs before finishing notes and doing a reset of the test samples..
    • finished moving to an under-utilized disk and reseting tests for alternative Target PSF settings.
    • currently testing a quick use of the simple model PSF (same as the manually set PSF method) with FWHM size set instead by the FWHM of the inputs. Preliminary comparison plots on simtest images, but need more work.

Bill Sweeney

  • vacation

Chris Waters

  • Registered for Durham meeting
  • Defined the next starting point for LAP.
  • Identified bug in my previous static mask update code, and fixed it. This allows bleed crosstalks to be filtered out, decreasing the number of false positives.
  • Outlined paper on Detrending of GPC1.
  • Sent astrometric information from SMF files to Ken to allow for a better constrained pointing model.
  • Some work with Conrad on tracking PSPS values back through DVO and to the initial SMF files.
  • Prepped work for regenerating boosted NOISEMAPs.