No Light to Camera (Andor)

Wednesday, May 2, 2018 12:34 PM

Problem(s) Encountered:

Unfortunately, I didn''t conduct any observations tonight.  First, the DEC controller didn''t respond and it had to be power cycled. I informed Eric and afterwards Don Terndrup, who observe on 2.4-m came and helped me with that issue.


The second problem turned out to be more complicated. The Andor camera didn''t get any signal. I tried to change gain from 1x, to 2x and 4x (solution I found in manual and also Eric suggested that). However, it didn''t solve the problem. Due to lack of ideas I closed the telescope.


Solutions:

Found that the shutter in the Buckeye filter wheel (FW) had closed for some reason.  3-position switch was set to “Open/Manual” but when I cycled it to “Close/Off” I did not hear the shutter close.  Switching back to “Open” resulted in the clack of the shutter opening and the detector can see light again.

I’ll speak with the 2.4m observer about how to solve this if the problem occurs again.  Sorry for a lost night on a simple issue.