Decatur, GA 30030 "High atop Kitt Peak sits the largest collection of optical research telescopes anywhere in the world. Mechanical Features: - CNC machined Composite Dust Cover over primary mirror. Contact Us, Copyright © 1999-2015 - Deep Sky Instruments - All Rights Reserved. The Obsession 20" is the scope that in 1989 revolutionized the Dobsonian. - Precision Secondary Mirror Focuser. "High atop Kitt Peak sits the largest collection of optical research telescopes anywhere in the world. - Supporting Fringe Analysis and Interferometric Data included. - RCOS "Focus and Forget" Technology. (404) 906-1024 Each evening, we offer a public program like no other. Mechanical Features: - 6061 Aluminum Mounting Rings - CNC Machined. A member of my Local Astronomy Club in Niagara (RASC – Niagara Centre) owns a massive 20 Inch Dobsonian Telescope that he will often bring out to our Observatory Site in the summer. - Multi-Stage Primary Mirror Baffle with internal knife-edge light stops. At our Visitor Center and its multiple observatories, the public is invited to learn about … Those looking for a more in-depth experience can reserve a night on the Advanced Observing Program.". - Low expansion, light weight Carbon Fiber Truss for superior performance and stability. - Multi-Stage Primary Mirror Baffle with internal knife-edge light stops. This experience is always a real treat, as the views through this giant “Dob” are incredible. - - Zero Expansion Astro-Sitall, ULE Type, or Zerodur RC Optics, Tested and Certified to at least 1/20th Wave RMS. Can be rebuilt around any optician's mirror. - Conical Secondary Light Baffle. - Zero Expansion, Astro-Sitall Ritchey-Chretien Optics, Tested and Certified to at Least 1/40th Wave RMS (root mean square). - Enhanced Aluminum (SiO2/TiO2) Overcoat - 96.9% Reflectivity. - Designed Engineered and Modeled in SolidWorks. Use an RCOS 20RC at NOAO's Kitt Peak National Observatory (RCOS 20" f/8.2 with ION Milled optics shown). Optical Features: - Conical Secondary Light Baffle. We have a great online selection at the lowest prices with Fast & Free shipping on many items! - 6061 Aluminum components - All CNC Machined. Discovery and excitement await! - Low expansion, light weight Carbon Fiber Truss for superior performance and stability. Review: Meade MAX 20" telescope Even a basic telescope can deliver clear views of celestial regulars like Jupiter and its moons. At our Visitor Center and its multiple observatories, the public is invited to learn about and gain hands-on experience with the latest astronomy has to offer. - RCOS CNC Machined "light weight" Dovetail Plates (Losmandy compatible) - top and bottom with matching Paramount VersaPlate hole pattern, allows dovetail mounting plate to be bolted to VersaPlate once scope is balanced. - 6061 Aluminum components - All CNC Machined. - Precision Secondary Mirror Focuser. The scope is perfect for bigger observatories. Our user friendly design, craftsmanship second to none, one person set up and super smooth operation have since made Obsession the standard by which all other Dobsonians are compared. Each evening, we offer a public program like no other. - RCOS CNC Machined "light weight" Dovetail Plates (Losmandy compatible) - top and bottom with matching Paramount VersaPlate hole pattern, allows dovetail mounting plate to be bolted to VersaPlate once scope is balanced. While many construction steps were carried alone in my basement, I …
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