RCOS Carbon Truss 20 inch Ritchey-Chrétien Telescopes... Use an RCOS 20RC at NOAO's Kitt Peak National Observatory (RCOS 20" f/8.2 with ION Milled optics shown). - Supporting Fringe Analysis and Interferometric Data included. - 6061 Aluminum Mounting Rings - CNC Machined. Each evening, we offer a public program like no other. The scope is perfect for bigger observatories. 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. 20" f/4- D20 The completely redesigned D20 features a 20" primary mirror by legendary optician Carl Zambuto . - Designed, Engineered and Modeled in SolidWorks. This program is an introductory star-gazing program. - Conical Secondary Light Baffle. 262 E Parkwood Rd - RCOS Proprietary 18-Point Primary Mirror Flotation Cell. Decatur, GA 30030 Mechanical Features: Details on planets and From your first telescope to precision, observatory-grade instruments, we have the perfect telescope to suit your experience level and budget. 12.5 inch, 18 inch, 20 inch, 22 inch and bigger. Optical Features: We have a great online selection at the lowest prices with Fast & Free shipping on many items! - RCOS Proprietary Center Mounted, Self Balancing Primary Mirror Cell. Optical Features: - - Zero Expansion Astro-Sitall, ULE Type, or Zerodur RC Optics, Tested and Certified to at least 1/20th Wave RMS. - Zero Expansion, Astro-Sitall Ritchey-Chretien Optics, Tested and Certified to at Least 1/40th Wave RMS (root mean square). Contact Us, Copyright © 1999-2015 - Deep Sky Instruments - All Rights Reserved. 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. At our Visitor Center and its multiple observatories, the public is invited to learn about … - Multi-Stage Primary Mirror Baffle with internal knife-edge light stops. - 6061 Aluminum components - All CNC Machined. - CNC machined Composite Dust Cover over primary mirror. - 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. This experience is always a real treat, as the views through this giant “Dob” are incredible. - CNC machined Composite Dust Cover over primary mirror. Complete and fully assembled OTA Price: Call. - Low expansion, light weight Carbon Fiber Truss for superior performance and stability. - 6061 Aluminum Mounting Rings - CNC Machined. - Conical Secondary Light Baffle. The ideal workhorse for the deep sky observers, the Explore Scientific 20-inch f/3.6 Truss-Tube Dobsonian is our largest aperture telescope. - RCOS "Focus and Forget" Technology. - Supporting Fringe Analysis and Interferometric Data included. - Precision Secondary Mirror Focuser. At f/4 this is the fastest mirror Carl has ever offered commercially, and of course, Webster Telescopes brought it to you first. Can be rebuilt around any optician's mirror. The 500mm mirror collects 5100 times more light than the naked eye. High Quality Custom Dobsonian Telescopes- Only the best reflector telescopes, handmade in the USA. Mechanical Features: - Enhanced Aluminum (SiO2/TiO2) Overcoat - 96.9% Reflectivity. - Shipped fully Assembled, Collimated and Ready to Use. 20-Inch Waite Telescopes Waite Telescope Mirrors Polished to Perfection Premium, hand-figured telescope mirrors and innovative telescope designs by Waite Research Renegade Telescopes Now Available with 10" to 27 . If youâve only just found out about the Nightly Observing Program, please consider joining the nearly 7000 people each year who experience the thrill of an evening on Kitt Peak. Building 20 inch truss-tube Dobsonian telescope The courage to undertake this project resulted from successful completion of 24 inch f4.5 Venor Telescope by fellow members of RASC - Kingston Centre. 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. - 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. Use an RCOS 20RC at NOAO's Kitt Peak National Observatory (RCOS 20" f/8.2 with ION Milled optics shown). Weâll view everything from planets to distant galaxies using our 20-inch and 16-inch Ritchey-Chrétien telescopes from RC Optical Systems. - RCOS "Focus and Forget" Technology. - Enhanced Aluminum (SiO2/TiO2) Overcoat - 96.9% Reflectivity. If you want an instrument that will provide you with a lifetime of … - Low expansion, light weight Carbon Fiber Truss for superior performance and stability. - 6061 Aluminum components - All CNC Machined. - Precision Secondary Mirror Focuser. Get the best deals for 20 inch telescope at eBay.com. The scope is perfect for bigger observatories. Each evening, we offer a public program like no other. - Active Cooling. The 20" is the ultimate blend of cost, ease of use, and visual impact. Those looking for a more in-depth experience can reserve a night on the Advanced Observing Program.". "High atop Kitt Peak sits the largest collection of optical research telescopes anywhere in the world. The Hybrid truss telescope design is quickly becoming a favorite. This telescope is so huge, that you must climb a ladder to look through the eyepiece when it is pointing at … But for NASA … The Obsession 20" is the scope that in 1989 revolutionized the Dobsonian. While many construction steps were carried alone in my basement, I … Find out why Celestron is the world's #1 telescope brand. Some of the best telescopes of 2018 straight from Virginia. - Multi-Stage Primary Mirror Baffle with internal knife-edge light stops. - Shipped fully Assembled, Collimated and Ready to Use. The TS 20" f/8 Ritchey-Chrétien astrograph is a ultimate telescope for astrophotography. Review: Meade MAX 20" telescope Even a basic telescope can deliver clear views of celestial regulars like Jupiter and its moons. Discovery and excitement await! The GSO 20" f/8 Ritchey-Chrétien Truss Tube Astrograph is a true RC telescope and will give you spectacular photo results also with large format camera sensors. - Designed Engineered and Modeled in SolidWorks. Due to the popularity of this program, it is recommended that you make reservations 2 to 4 weeks prior to your visit. - Active Cooling. Deep Sky Instruments (404) 906-1024 "High atop Kitt Peak sits the largest collection of optical research telescopes anywhere in the world. Best reflector telescopes, handmade in the USA deliver clear views of celestial regulars like Jupiter and its moons more! A real treat, as the views through this giant “ Dob are! The popularity of 20 inch telescope program, it is recommended that you make reservations to., we have a great online selection at the lowest prices with Fast Free... A favorite great online selection at the lowest prices with Fast & Free shipping on many!... The lowest prices with Fast & Free shipping 20 inch telescope many items from your first telescope to suit experience. 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