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auriga

18 Sep 2013 09:19



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"The oval secondary baffle is in the light path to keep it small, but since the primary sees it edge on it does not significantly degrade the image."
Pai si razele ce se intorc spre secundara de pe suprafata oglinzii aflate din partea opusa focuserului nu sunt blocate de parasolar? Astea inseamna cat? 10-20-30% lumina lipsa?