Changes between Version 10 and Version 11 of IPP_Progress_Report_20100628

Timestamp:

Jul 13, 2010, 3:30:04 PM (16 years ago)

Author:

eugene

Comment:

--

IPP_Progress_Report_20100628

@@ -5 +5 @@
 
 === Eugene Magnier ===
+
+Much of the team work this week has been aimed at smoothing rough edges of the processing and attempting to improve the quality of the data.  We have two ongoing efforts to improve the masking and detrends: Heather is concentrating on the darks and improving the reliability of the regular detrend processing.  Chris has been focusing on the issues with OTA14, OTA11, and the suspected non-linearity in edges and certain cells.  Much other work is related to adding more information in the database and the ippMonitor tools to make it easier to see what is happening and what has happened with the data processing.
+
+I've been concentrating on the extended source analysis, in particular the non-linear fitting.  I spent much of my time this week re-working the Sersic fitting to use a more traditional representation of the parameters: I have been using a simplified form of the function f = Io exp(-z^n).  I have been finding poor convergence, especially for DeVaucouleur-like profiles, and I am suspicious that this is due to my representation.  There is strong coupling between the n and elliptical contour terms which may be exaggerated by the choice of parameterization.
 
 === Serge Chastel ===