Changes between Version 5 and Version 6 of PublicPages/MayallZbandLegacy/NotesforObservers/Problems

Timestamp:

Feb 5, 2016 4:29:27 AM (9 years ago)

Author:

Arjun Dey

Comment:

--

PublicPages/MayallZbandLegacy/NotesforObservers/Problems

@@ -66 +66 @@
           This pops up the following window: 
 [[Image(NOCS_FOCUS.tiff, 400px)]]
-        - use a good guess for the mid-point, an instrument focus step of -100 (or -70, if the seeing is good), at least 7 focus iterations and a detector pixel shift of 30; Make sure you have chosen the zd filter
+        - use a good guess for the mid-point: 
+                 focus in zd filter = -8400 + (1.4C - Ttruss)*110
+          an instrument focus step of -100 (or -70, if the seeing is good), 
+          at least 7 focus iterations and 
+          a detector pixel shift of 30; 
+          Make sure you have chosen the zd filter
         - execute the focus sequence
         - edit the /data2/observer/mscfoc.cl script to change the file name of the focus image