Changes between Version 8 and Version 9 of IPP_Progress_Report_20110502

Timestamp:

May 10, 2011, 9:08:41 AM (15 years ago)

Author:

eugene

Comment:

--

IPP_Progress_Report_20110502

@@ -5 +5 @@
 
 === Eugene Magnier ===
+
+This week, we upgraded the operations IPP installation to a new tag: ipp-20110505.
+
+There are not a huge number of algorithmic changes in this new tag.
+Some of the salient algorithmic changes include improvements in the
+photometry analysis to make aperture and psf magnitudes internally
+consistent and consistent between psphot and psphotForced.  There are
+also a number of improvements to the Kron flux analysis in response to
+issues identified by Nigel et al -- in particular, the reported Kron
+mags are now measured with all other object models subtracted off.
+
+Note that the previous release (ipp-20110406) included all of our
+upgrades to the detrend analysis (non-linearity correction at the
+faint end, improved dark model with better temperature trends,
+improved masking resulting from camera tuning).
+
+This tag includes management elements needed to organize large area
+processing (LAP) which allows us to process exposures up to 3pi
+stacks.
+
+We are now starting to run large area processing of 3pi data, using
+the photometry and astrometry reference database as it currently
+exists.  Note that this reference database is good for astrometry
+more-or-less everywhere, but I'm still unsatisfied with the photometry
+results.  Some areas of the sky are good, but others do not yet have
+good results.  We are doing 3pi stack analysis for sample areas where
+there are 4 visits in all 5 filters, and we will limit for now to
+areas with good (or at least OK) photometric solutions.
+
+We will process a modest chunk of sky (~1000 - 2000 square degrees)
+before the start of the Boston meeting.  The outputs from the large
+area processing will be placed in a new product on our datastore.
+Information on the data distribution labels will be forthcoming.
 
 === Serge Chastel ===