This is what happens when you are a planetary observer/machinist and can't afford a "High End" apochromatic refractor. Here is an active cooled C9 on a modified Meade fork mount. The fork mount has been converted to a GEM (rock solid). The C9 has a closed loop (sealed) cooling system and a modified secondary holder (reduced from 36.5 to 32.4%). I completed it in the summer of 2001. Did all the mods make an already good scope a better performer? Oh yeah!
40 year old restored C14 with recirculating cooling w/Skywatcher DOB GOTO Conversion (CPC14)
Synscan DOB mounted Sky-Watcher Evostar 150mm/1200mm ED Refractor
"Rescued" Craig's List Orion 120mm/1000mm Refractor