| | 7 | |
| | 8 | We have been working this week on two main fronts: 1) finishing some development work to be ready for the 'demo month', and 2) producing nightly stacks for the Medium Deep fields. |
| | 9 | |
| | 10 | I spent much of the week working with Paul to make sure the kernel matching process is as good as we can reasonably make it, especially the dual convolution portion. Paul put together a nice suite of examples on Friday that compare the now current ppSub parameters with our best understanding of Hotpants ([wiki:ppSub_vs_Hotpants]). In that example, ppSub does quite well. However, we would not be surprised if the difference imaging experts in the consortium can provide better Hotpants parameters. The big question is if they can demonstrate better performance than the ppSub performance. |
| | 11 | |
| | 12 | I have also been working on a psphot bug that Chris W identified -- his cosmic ray masking code was running into some segfaults when operating on the footprints for certain objects. I tracked this down to a premature free of some of the first-pass footprints. This fix is still on the eam_branches/20091201. |
| | 13 | |
| | 14 | I have also started to build new detrend masters based on the new camera settings. Two things have become clear in this work so far: 1) sometimes the camera does not report a GAIN value for a cell, and we have been treating these cells as bad -- that may not be the case, so we are going to modify the analysis to treat those cells as having a GAIN of 1.0. 2) It is clear that we will need to update our static mask -- there are changes in the hot column / glowing defects with the new settings, and some clearly need to be masked, though some old masks may now not be needed. |
