Obsession 20-inch f/5 truss scope, Galaxy primary mirror has optician's certificate, enhanced coating, 96% reflectivity, Strehl Ratio 0.952. Mirror has been washed only once.
Secondary has EnduroBrite dielectric coating, with 99% reflectivity. Primary has 18-point stainless steel cell with integral 12v cooling fan with Astro Systems gel cells and charger.
Mirror box, rocker box, and UTA all fabricated from hardwood plywood; no particle board on scope, all woodwork has 5-coat polyurethane finish.Wheelbarrow system uses 10-inch pneumatic tires and detachable handle extensions for loading & unloading.
Upper Tube Assembly has been rebuilt and upgraded with Ultra-smooth Starlite Feathertouch focuser with 1.25" adapter, Astro Systems filter slide, adjustable secondary holder with dew heater and spider. Telrad sight included.
With Sky Commander on-board computer.Truss poles lock in place with split clamps on mirror box and cam levers on UTA. Setup time is 5 to 10 minutes. Astro Systems Scope Coat included. Obsession nylon light shroud included.
I have over $8,800 in this scope asking $4800 (firm), buyer pays shipping. I have upgraded to a 25" Obsession. Scope is in like new condition, am selling to because I just recieved 25" and my wife say the 20" must go