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nobody

28 Iun 2010 10:29



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Uite un studiu serios la ceea ce vrei tu sa faci: It requires very accurate mounting and adjustment mechanism, and even then it is questionable how close to its optimum such a system can be objectively maintained. 

On the other hand, a 200mm ƒ/8 mirror in a regular Newtonian arrangement can work with central obstruction in the 0.15 to 0.25 of the aperture diameter range, satisfying needs from high-contrast planetary to a wider illuminated field deep-sky instrument. Its particular advantage is comparatively low sensitivity to misalignment, thus likely better field performance than what optical data per se indicates. Considering this, a tilted-mirror telescope is an alternative mainly for those who find in it values other :!: than its optical quality and practicality of use.