Changes between Version 2 and Version 3 of fullforce_SAStest2

Timestamp:

Mar 31, 2014, 1:53:41 PM (12 years ago)

Author:

bills

Comment:

--

fullforce_SAStest2

@@ -5 +5 @@
 
 There we presented plots that send to indicate that the full force results provided a much
-better match to SDSS model fits than the psphotStack results. There was some scepticism that
-the difference was so great. In particular the plot [http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/attachment/wiki/fullforce_SAStest1/ddevrad_hist_comparison.jpg plot] 
+better match to SDSS model fits than the psphotStack results for de Vaucouleurs models (dev) There was some scepticism that
+the difference was so great. In particular the validity of the [http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/attachment/wiki/fullforce_SAStest1/ddevrad_hist_comparison.jpg plot] 
+was doubted.
+
+It turns out that this scepticism was justified. The ddevrad values for the stack photometry were incorrect (the difference in units between the sdss value (arcseconds) and the IPP values (pixels) was not accounted for. Upon further review we discovered that the wrong stacks (label SAS.20130620) were used for that investigation rather than the SAS 32 stacks (label SAS.20130703).
+
+In order to examine the results in more detail we re-ran the full force pipeline selecting the deV models for forced photometry. The skycells chosen were in the middle
+of the SAS field.
+