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I think its is good to start with no guiding to get to understand your mount and get it working as best it can...and you seem to be there.
As to exposure length you may not realise even though I say over and over literally all my photos have been no longer than 2 minutes and that was for only one photo ...the prawn nebula from recollection...but everything else has been 30 seconds with a few at 35 seconds.
I have had to do this because of guiding problems which I still have not fixed...maybe next time...however it surprises me how well short exposure works.
I take heaps ...the recent Orion comes from a bank of about five hours but I stack now only the very very best...so out of five I may het three...
At first I used short exposure because I would not get good polar alignment but now I sortta am getting a preference for short ecposures...I just think shorter mrans a better chance of it being real sharp.
Anyways until I get auto guiding working perfectly I have to say short is great ☺.
Alex
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