Changes between Version 7 and Version 8 of QUB_MDS_diff_analysis_20091204

Timestamp:

Dec 7, 2009, 12:10:20 AM (17 years ago)

Author:

dravg.uk

Comment:

--

QUB_MDS_diff_analysis_20091204

@@ -12 +12 @@
 
 '''Detail of the MD08 Skycell 102 image (white rectangle shown in full images). From left to right : '', WARP, UNCONV STACK, CONV STACK, DIFFERENCE''''' - click for full resolution
+
+'''Problems and questions'''
+
+1. The subtraction isn't working well yet. Input warp is 1.4" and the stack has been convolved to 2.0". Is the problem related to the mismatch between the two ?  Can a better result be obtained with ppSub with two matched warps ? We can check this with Paul this week.
+
+2. As Eric discussed at last DRAVG, our first aim is to verify that the pixels in the image are reasonable. So top priority is solving the convolution and kernal matching. But after, we need to look at the IPP photometry - clearly too many spurious sources which do not have a "bad flag" set (the Green sources).