Changes between Version 62 and Version 63 of Background_Dark_Model

Timestamp:

May 8, 2012, 5:17:14 PM (14 years ago)

Author:

watersc1

Comment:

--

Background_Dark_Model

@@ -1 +1 @@
 [wiki:Background_Continuity Return] 
+
+== May 8, 2012 ==
+
+=== Final ghost model ===
+
+Tracked down a math bug in my ghost model solving that switched the ghost and reference positions while solving the model polynomial.  This resulted in fits that appeared close, but were offset by some significant amount (roughly twice the shifts the ghosts have from their direct reflection position).  Correcting this bug results in greatly improved mask centers.  From solving the ghost model and comparing with the offsets manually measured (541 ghost positions) shows that the new results have a far smaller scatter and no mean offset.
+
+|| Model || X || Y ||
+|| Original || 63 +/- 79.5 || -18 +/- 148.3 ||
+|| Updated  || 0  +/- 48.1 || 0   +/- 62.6  ||
 
 == May 7, 2012 ==