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focus
Hi Tanja, great shots. Really work on your polar alignment (drift align) to get it as spot on as possible even with a guide scope. Took me ages on my C11 with a wedge but certainly made a difference. Flats should help with vignetting which I have a similar problem with using a f6.3 focal reducer. I also bought a microfocuser (still have to add the hands free part to it) but probably the biggest initial gain I had with focusing was a Bahtinov mask as it lets you get it spot on even if you are wobbling the scope around - take a photo and examine and adjust until it is correct. Hope this helps and look forward to seeing more from you.
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