== IPP Progress Report for the week 2010.01.11 - 2010.01.15 == 
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(Up to [wiki:IPP_Progress_Reports IPP Progress Reports])

=== Eugene Magnier ===

=== Heather Flewelling === 

=== Bill Giebink ===

=== Roy Henderson ===

 * IPP/PSPS interface
  * Memory problem - psFits/Lib functions using huge amount of memory. Now writing tables per CDD (as in spec) instead of one big detections table.
  * Got Maui cluster access, learned how to locate diffs/stacks etc.
  * Made changes to FITS file structure based on meeting with Conrad.
  * Speed issues - psFits/Lib very slow. Four minutes to write 75Mb file. Optimised some code, but more needed.
  * Now writing out FITS for diff stage (many fields missing, to be decided upon).

=== Paul Price ===

 * Fixed bug in generation of skycell and mosaicked camera configurations that was preventing warp update.
 * Tracked down bug in publishing to MOPS: sources with NAN magnitudes are not being propagated, but most sources in the CMF files have NAN magnitudes, and those that don't appear to be spatially correlated (!?).  Gene suspects this issue has been solved by a recent fix to psphot.
 * Image subtraction with dual convolution
  * Seems to be a problem in math for the unconstrained least-squares problem: reworking the least-squares matrix in a simpler manner yields a solution that does much better!
  * Fixed sign error in penalty function.
  * Created more complete test set
  * ISIS_RADIAL, PENALTY=1, SKY.ERR=SYS.ERR=0, DUAL=TRUE with orders (1.8,2)(3.3,2)(5.8,2)(10.2,2) very successful in producing zero sources in output photometry except for large mis-aligned input PSFs.
  * Using widths = (pi/2)^i^ for i = 1..6 and order = 2 reduces the problems with large input PSFs, but has some nasty over-subtractions.
  * Comparing with hotpants.  ppSub with dual convolution looks better (as one would hope: more free parameters)
  * ppSub about twice the running time of hotpants, but doing 4x the convolutions (2 input images, 2 variance maps)
  * Wrote up on wiki: http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/ppSub_vs_Hotpants
 * Fixed bug in update of diffs: wasn't reading in the old kernel, so was calculating a new one.  ppSub on trunk now produces identical output when doing an 'update'.

=== Bill Sweeney ===

 * Finished testing and integrated changes to the IPP to correctly mange update processing and destreaking
 * Gathered up detrends and created a set of destreaked burntool applied raw images for the M31 team at MPE. 
 * tested injecting the detrend and raw images into an ipp database outside mhpcc. Discovered a problem with destreaking of raw images. It tured out to be a tricky bug recently introduced in the streaksremove.
 * Travelled to Germany for a 2 week visit to MPE and MPIA.

=== Chris Waters ===

 * Rolloff analysis: http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/EdgeRolloff Generated statistics to look at which chip/cell combinations have worse rolloff issues. Still need to finish this analysis.
 * Nightly stacks: Wrote code to automatically create nightly stacks. It identifies the completion of summit_copy, applies burntool to the data if needed, queues the chip->warp processing, and queues the stack processing when the warps are complete. More testing would be useful. Current processing listed at: http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/NightlyStacks
 * Moved nightly stack data off of ipp026 in case hardware problems cause it to lose data this weekend.