Eric Roel's 1200GTO mount holds his 10" f/20 Maksutov-Cassegrain that he uses primarily for high-resolution lunar and planetary imaging.
    Eric also has a 6" f12 Astro-Physics Superplanetary triplet apochromat, used for visual observing and for Solar, Moon and Planetary imaging.

Visit his site at:
http://voltaire.csun.edu/roel/roel.html