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APO vs. long focal length Achromat

Started by mhansen, 08/07/2002 03:28PM
Posted 08/07/2002 03:28PM Opening Post
I am considering building a 4" f12 refractor, a doublet from Hans Wilkenaar (I build an 83mm F6 doublet and am very pleased with its performance especially for wide field viewing). Will the planetary and lunar views given by a good quality 4" f12 be comparable to say, a Tak 102 or TV 102? I am aware of the portability and mount requirement differences, so please share your opinion on chromatic abberation, color, etc. My experiece in refractors is limited so any advice would be greatly appreciated.

Mark Hansen
http://public.fotki.com/mhansen/