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