Changes between Version 3 and Version 4 of TestSN2009kf

Timestamp:

Oct 29, 2009, 2:58:51 AM (17 years ago)

Author:

kpat.belfast

Comment:

--

TestSN2009kf

@@ -1 +1 @@
 = DRAVG test on SN 2009kf photometry (MT Botticella) =
 We are working on photometry of the the SN PS1-0609001 (2009kf) 
-and we have been looking at the newly released MD08 images (stacks for each epoch).
+and we have been looking at the newly released MD08 images (stacks for each epoch)
+and also are comparing them with the new, seasonal stack of the good images
+released by Heather. 
 
-Several  immediate problems :
+The main problem is the masking in the nightly stacks that Paul has given us, 
+compared what seems possible given Heather's new stacks. Example comparison is :
+
+Left : the seasonal stack made by Heather (MD08.skycell.102.stk.29916.fits) with 41 input images.
+All NaN pixels are set to red. This looks good, brightest stars have saturated cores as expected. Virtually no other pixels are masked as NaN in these images. In fact apart from the butterfly 
+effect these stacks look very good. On the right is an example from one of Paul's nightly 
+stacks (MD08.skycell.102.stk.25151.fits) with 9 input images. 
+Many more stars are masked, and also bad chip areas are still visible, despite there being 9 
+input images. This is a similar problem to that noted by Durham in their ([wiki:Durham_MDS_Testing3])
+
+
+[[Image(MD08-Heather-Paul-comp.jpg)]]
+
+
+Some more severe masking is seen below : 
 
 -'''masked areas'''