Quote:
Originally Posted by Zuts
If Takahashi can make and sell an 8 inch Mewlon for 3000 USD then GSO can make and sell an 8 inch RC for less than 1500 USD.
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The Takahashi Mewlon is a Dall Kirkham design ( 4 X the Coma of even a Classical Cassegrain) which uses a prolate elipsoid shaped primary and a spherical secondary mirror. The elipsoid primary would be twice as easy to make as the hyperbolic primary and secondary of a true Ritchey Chretion design .