File talk:OpticalTube3.png

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Incorrect name

[edit]

Note that this is not a Newton-Cassagrain telescope, but just a "classical Cassegrain". A Newton-Cassegrain would have a plane ternary mirror at an angle of 45° between the primary and secondary mirrors!

HHahn (talk) 21:12, 10 May 2010 (UTC)[reply]

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