A vice is exactly what came to my mind as I looked at the pattern depicted in the photos and pondered the 180 degree description. But why clamp the secondary in a vice? Weird!
-Gary
There is only one constant in our infinite universe; it is change.
D&G 8” f/15, AP178 f/9, C11, C8, ED80, TV-85, TV101&102, SW120ED, 6"Cave f/8, Solarmax 40, ES127MC,
DM-6, Losmandy Titan 50 GEQ, G11, AP800, ES Twilight-1, UA Unistar Deluxe, WO EZ-Touch,
Denk BVs, 7x50 Fujinons, 10x50 Nikons, 15x70 Astrophysics, 16x70 Fujinons, 22x100 Oberwerks,
Sim Picheloup CPT, Canon 40D, 60Da, Vixen Polarie, SXV-H9, DMK 41AU02, DBK 21AU618,
Shelyak Lhires Lite Spectroscope, Rainbow Optics Spectroscope, Field Tested Systems RSPEC,
Chairman, Southwest Region of the Astronomical League (SWRAL)
President Emeritus, Historian, AL Awards Coordinator, Texas Astronomical Society of Dallas (TAS)
Member/Volunteer, 3RR Comanche Springs Astronomy Campus (CSAC)
ALCOR, Advisor to the Board, Texas Star Party (TSP)
NASA-JPL Solar System Ambassador Volunteer (SSA)
