IPP Progress Report for the week 2009.10.19 - 2009.10.23

(Up to IPP Progress Reports)

Eugene Magnier

Heather Flewelling

Bill Giebink

Paul Price

• Stacking (branches/pap)
  • Generating unconvolved mask and variance along with image
  • Investigating rejection behaviour: some stars rejected from all images, some features on a single image (e.g., burn) can result in pixels from all images being rejected, scattering of pixels rejected on a single image
  • Some stars not aligned: both warp and convolved warp centroid can differ by up to 1.5 pix
• Dual convolution subtraction (also on branches/pap)
  • Can suppress common basis functions between dual kernels
  • Dual convolution looks better, but produces more sources from photometry
  • Variance map is lower for result of dual convolution
  • Investigated variance calculation, seems fine (and renormalisation should take care of it anyway), yet there are more pixels in the (S/N)² image above threshold in the dual convolution diff compared to the single
  • Lots of sources at the edge of masked regions (where there's more noise in the smoothing) --> can be filtered with PSF_QF > ~0.7
  • Increased smoothing also brings out more nasty features (e.g., wiggles, burns)
  • Now satisfied that dual convolution is doing the right thing
• Fixed temp directory for stacks --> /local/tmp --> /local/ipp/tmp
• Translation program for Dave Monet (trunk)
  • Implemented translator (ppMonet) which now lives in a new directory (ppTranslate) with ppMops (trunk@r25923)
  • Added to publish system
  • Added 'active' flag to publishClient table
  • Sending lots of data (5811 exposures) from MD, 3pi, SVS, Sweetspot, STS, flatcorr

Bill Sweeney

Chris Waters