Changes between Version 6 and Version 7 of IPP_Progress_Report_20090913
- Timestamp:
- Sep 20, 2009, 4:24:19 PM (17 years ago)
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IPP_Progress_Report_20090913
v6 v7 34 34 * Retrieved and sent dravg archive 35 35 * Stacking: 36 * Everything was getting rejected. Turned off "additional variance" in pmStack, and get decent rejections now. This is not well understood yet, but may be connected with a change made a month ago removing the "variance factor" terms, or renormalising the image subtraction chi^ {2}.36 * Everything was getting rejected. Turned off "additional variance" in pmStack, and get decent rejections now. This is not well understood yet, but may be connected with a change made a month ago removing the "variance factor" terms, or renormalising the image subtraction chi^2^. 37 37 * Can identify bad images using the iq statistics calculated in psphotImageQuality.c: iq_m2, iq_m2_uq-iq_m2_lq, iq_m3 and iq_m4 are useful quantities. 38 38 * Sent Nigel and Peter a dump of !ThreePi data from June/July that should be useful for determining good cuts on these quantities.
