Initial/ongoing comparison of IPP to SuperMACHO/ESSENCE Photpipe reductions using GPC1 images from the 2009.01 release. (don't forget to note the IPP svn-head revision # being used) === Warping (PSwarp and SWarp) === === Stacking (ppStack and SWarp) === === Differencing (ppSub and hotpants) === === Photometry (psphot and dophot/pixie) ===