Quote:
Originally Posted by AlexN
I can see no possible reason someone would chose a 90mm Mak Cass over a fast 80mm achro refractor for guiding. None whatsoever...
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I do it because it works and I get good guiding. Thats why we are all different.
I mention it because there are a lot of different ways to do the same thing. I also use a 50mm finderscope as a guidescope for my 80mm. Why? because it works, its light and I don't need such accurate guiding for an 80mm scope.
I use a 90mm mak for guiding my 8" and 10" SCT at 2000mm and 2500mm fl because I get more accurate guiding than using my 80mm as a guidescope. I use the 80mm or 90mm scope to guide my 127mm ED refractor.
These systems work well for me and I dont think an 80mm fast refractor will do as good a job as the 90mm mak at 2500mm.
Just my 2 cents with practical experience.
But as I said first the 80mm BOSMA would be a fine guidescope.