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Message: <blockquote data-quote="Rui_Caratão" data-source="post: 2959487" data-attributes="member: 80272">Cosme, weight is not much diferent  if I dont go for Oberwerks, but size is!! any refractor setup is very long even if you go for fast refractor, you can spare a few inches using a 90º diagonal but I really want to use 45º since its better for long periods of terrestrial view. All Miyauchi clones seem quite handy to me .... <a href="http://i3.photobucket.com/albums/y96/PATOPGUN/Mvc-095s.jpg" target="_blank">http://i3.photobucket.com/albums/y96/PATOPGUN/Mvc-095s.jpg</a> Altough I havent tried the semi-apos, the only way to go above 50x without CA is going for the Kowa HG Prominar the Docters or the new APM Apo, but the Higlanders have also the non-fluorite version, they certainly are superbly collimated but how much diference exists between them and the other achromats? If the semi-apos havent collimation issues I am sure they are capable of mid range mags, only sacrificing CA.</blockquote>