Pete Brooks wrote : > I've never gotten the idea that a Rumak is easy When I said Maksutov I meant 'pure' Maksutov, which some call Maksutov-Newtonian (although you can use it like Schmidt, place film directly at primary focus). Other "Maks" (compound ones like Mak-Gregory, Mak-Cassegrain, Walland, Rumak, Simak etc) are nowhere near as easy to design. And make :-) Bratislav