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Showing results for tags 'skywatcher;'.
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Hi everyone, I'm trying to figure out the cause of these weird star shapes I'm getting with my 130pds. I had them before, but someone narrowed it down to being pinched optics. So I loosened the primary retention clips, which seemed to fix the problem. Now that I've been able to get back out for another night of imaging, they seem to be back again! I made sure that the primary retention clips are still loose - should they be touching the mirror or not? I've also made sure that the primary collimation locking screws aren't done up too tight as well. Collimation through my cheshire looks to be spot on to me. Here's my image of Andromeda with the odd stars in question:
Eagle Nebula - Messier 16 Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, 14bit NEF, Long Exp. NR on. 33 x 180sec (1/3 before & 2/3 after zenith) New Moon, 4deg C, 75%RH, moderate LP. PixInsight and Photoshop
Hi All I downloaded a trial version of PixInsight yesterday and this is my first attempt to use it on one of my captures from last year. The colour is much better and overall noise is lower. "Harry's tutorials" have helped enourmously but I think it will take me a while to master even a small number of the many functions that PixInsight contains. Cheers Mike