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Chris - Thanks for the feedback. Not sure I'm experienced
enough
yet for anti-vignetting techniques I've heard about. Hopefully in the future... I hadn't thought of cloning out the donut but will definitely do that one. Alen - I think the donut is from bright star light reflecting off the GEG reducer (uncoated) and bouncing around the secondary/primary mirrors. I never get it on dimmer stars. f7.5 is as far down as I really want to go seeing how much worse the vignetting gets from others shots at lower f#s like you mentioned. I have been working hard to get my guiding consistently good and plan to do a bunch of work at f11 without the reducer altogether. Jeff - Yes, my astro-buddy Dan Trimble helped me lap both RA and DEC gears as he had done on his G11 to smooth out jumps that were hard to guide through. Seems to be really paying off. Mike - Hey I didn't know you still posted here being on the "dark" side these days. It was great to meet you last weekend. Love your results (take a look folks - he used Bobby Middleton's old Epsilon 130 with his new ST2000): http://www.mrh.org/20021004.html Steve > Please take a look at my latest. I'm very pleased with the Provia 400F >I tried for the first time last weekend in Borrego Springs. Pushed the >film +2 as some had suggested. Had the best results to date with >guiding as well and was able to stack 2 shots for each image. Did very >minimal processing. Any suggestions? > >http://home.earthlink.net/%7estevelindsey/M27.html >http://home.earthlink.net/%7estevelindsey/M33.html >http://home.earthlink.net/%7estevelindsey/M45.html > >Steve > > |