Changes between Version 1 and Version 2 of Background_Continuity

Timestamp:

Jan 13, 2012, 2:21:33 PM (15 years ago)

Author:

watersc1

Comment:

--

Background_Continuity

@@ -5 +5 @@
 As OTA27 has cells that both have the PATTERN.ROW correction (columns 0-3,7) and do not have this correction (columns 4-6), it was chosen as a test case to see what could be done to ensure the cell-to-cell continuity between these cells.  Exposure o5479g0287o was arbitrarily chosen based on JPEG images that showed background issues.  Shown below is an image of this OTA (cell 00 is located at the bottom left corner, and increment up and to the right), along with a profile slice along a column and row of cells.  All the regular processing stages were enabled (MASK/DARK/NONLINEARITY/FLAT/PATTERN.ROW/BACKGROUND).  The large jumps between columns 3-4 and 6-7 show that the discontinuity between these columns due to the different corrections applied cause the background fitting code to arrive at bad background levels.
 
-[[Image(bkg_image.png,800px)]]
+[[Image(bkg_image.2.png,800px)]]
 
 [[Image(bkg_profiles.png,800px)]]
@@ -11 +11 @@
 Disabling the background correction (but leaving the PATTERN.ROW correction enabled) shows that there are discontinuities in the cell-to-cell background levels, as well as trends across the cells.  These trends are evident even on columns where no PATTERN.ROW correction has been applied.
 
-[[Image(no_bkg_image.png,800px)]]
+[[Image(no_bkg_image.2.png,800px)]]
 
 [[Image(no_bkg_profiles.png,800px)]]