Obsession Telescopes / Telescopes / 20" Classic
20 inch Dobsonian Telescope construction - YouTube
Moore Observatory Remote/Robotic Telescope
MEADE 20" RCX - Ritchey-Chretiens, Dall-Kirkhams, and Other Designs - Articles - Articles - Cloudy Nights
20-inch Truss Tube Dobsonian Aperture Telescope - Cosmeascopes
Best 20" Dobsonian Telescope — New Moon Telescopes
What can I expect from a 20" Dobsonian? - Major & Minor Planetary Imaging - Cloudy Nights
Obsession Telescopes / Telescopes / 20" Classic
20-inch Aperture Telescope – Aperture Telescopes
Looking at life through a 20-inch telescope in Danbury
Obsession 20 inch dobson F5 - Telescopes
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RCOS: 20 inch "Ruggedized" Military Telescope
Imaging Planets with the 20-inch Aperture Telescope – Aperture Telescopes
Review: Meade MAX 20" telescope | WIRED
Obsession Telescopes / Telescopes / 20" Classic
20"f/3 and 25"f/3 Dobsonian Telescopes: Summary Description
Obsession Telescopes / Telescopes / 20" Classic
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Bob Bunge's TJ2 - Story of a 20-inch Dobsonian Telescope, the history of a 20+ year old Dobsonian
RCOS: 20 inch Carbon Tube Telescope
First Look: Meade's MySky, 20-inch RCX - Sky & Telescope - Sky & Telescope
Clyde Bone and His Two Unusual Mersenne Telescopes! – Tele Vue Optics, Inc. Blog
Explore Scientific - Generation II - 20-inch Truss Tube Dobsonian Tele
