I have been having a frustrating problem with my Atik EFW2 filter wheel over the last few months. I think it’s the same problem as reported in this thread, but I can’t be 100% sure.
The reason I’m starting a new thread is because last night SGP failed to send me a notification that there was a problem. When this has happened in the past I have gotten a notification that the sequence aborted.
What happens is that SGP calls for a filter change and reports “moving” in the filter wheel module. But it remains “moving” for a long time and causes SGP to abort. Most of the time the filter wheel has correctly moved to the right position but the ASCOM driver/SGP keeps reporting “moving”. On rare times the filter wheel has NOT moved correctly. When this happens, if I shut down SGP and restart SGP the filter wheel position is correctly reported in SGP and I can continue the sequence. Note that I do not disconnect the filter wheel at all, just restart SGP and all is fine.
Based on a suggestion in the above linked thread, I have increased the filter wheel delay to 15sec. I started at 10sec and at first I thought that had solved the issue because it happened much less frequently. But then it happened again and I increased to 15sec. Happened again. So I’m not sure that is a solution.
I have been in conversation with Atik on this. They seem convinced that the problem is that I need a new elastic band around the filter disk. I have no idea why that would be the solution but they are sending me a replacement band (its been in the mail for nearly 3 weeks now!).
Does anyone have any idea what could be causing this?
Why didn’t SGP send me a notification when the sequence aborted, as it has in the past when this problem occurred?