Changes between Version 11 and Version 12 of IPP_Progress_Report_20110808

Timestamp:

Aug 17, 2011, 8:57:53 AM (15 years ago)

Author:

eugene

Comment:

--

IPP_Progress_Report_20110808

@@ -5 +5 @@
 
 === Eugene Magnier ===
+
+I have spent more time on the extended source analysis work than expected.  I discovered an error in the flux integration for the Sersic models.  This was the source of inconsistent results between the generation of the model and the fitted flux, and was misleading me on the total flux.  This investigation was driven by the concern raised by Nigel that we are not getting the Kron mags right for bright galaxies.  I think I have identified the source of that problem as well: the code was returning the PSF-scale aperture rather than the full extended aperture in the output.  Finally, I am suspicious that the same integration error may have been responsible for the FWHM dependence of the psf photometry using the PS1_V1 model.  The scale is about right to account for the ~1-2% variation with typical seeing.  
+
+I also put together a plan for the MHPCC hardware upgrades and started the large-scale rsyncs needed.  These finished Monday, and the first set of hardware upgrades was done by Cindy and Bill.  
 
 === Serge Chastel ===