Hi Marcus. Will you try 30 minute subs for me please? Say 3 if you can. I am curious as to what you will get with that duration subs. I have been doing 30 minute subs on the 12" and getting very good ADU results.
The stars look slightly rectangular to me. This might well be guiding related though or maybe a dud sub somewhere. The STL is certainly noisier than the STXL. I had forgotten how much extra noise there is from the 10 degrees less of cooling. Time for a new camera????
This scope has the corrector in the baffle is that right? How much back focus do you get with these scopes?
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