Changes between Version 48 and Version 49 of Durham_MDS_Testing

Timestamp:

Aug 21, 2009, 5:20:32 AM (17 years ago)

Author:

shaun.cole@…

Comment:

--

Durham_MDS_Testing

@@ -126 +126 @@
 [[Image(gals_r_saturation.jpg, 425px)]]
 
+== Stacking tests ==
+
+To test the problems with the stack, Peter Draper and I have repeated the stacking of MD08 r-band skycell 041 using STARLINK software. This stack has 25 input warps - unfortunately for some unknown reason two were missing from Durham's data bundle, so we have only been able to stack 23. Shown below, for left to right, are crops from:  the original IPP stack (seeing 2.0" FWHM); a STARLINK median clipped stack where the warps have been smoothed with a Gaussian to 2.0" seeing before stacking; a STARLINK median clipped stack where image has only been smoothed ''after'' stacking to 2.0" with a Gaussian; the STARLINK median stack with no smoothing at all (seeing about 1.35"). All images are shown with the same intensity scale.
+
+[[Image(original.jpg, 400px)]] [[Image(smooth_before.jpg, 400px)]] [[Image(smooth_after.jpg, 400px)]] [[Image(unsmoothed.jpg, 400px)]]
 
 
+
+