Changes between Version 2 and Version 3 of stack_background_example

Timestamp:

Sep 19, 2012, 5:03:49 PM (14 years ago)

Author:

eugene

Comment:

--

stack_background_example

@@ -11 +11 @@
 I use psphot to generate a background model image, now displayed with 30x the stretch of the image above:
 
-[[Image(MD09.example.jpg)]]
+[[Image(MD09.back.psphot.jpg)]]
 
 The mean and median of the background model are 201.6 and 200.6 respectively (according to the `mana` 'stats' command).  The next plot is a histogram of the original image pixel values:
@@ -22 +22 @@
 
 [[Image(sky.loghist.png)]]
+
+Finally, the image below shows the background model obtained by sextractor using the default recipe.  The much large variations in the background will result in degraded photometry, especially at the faint end.
+
+[[Image(MD09.back.sextract.jpg)]]