$2,797.50 (f/3.7), $2,397.5 (f/4.2) deposit at the order time, rest, including options and shipping will be paid before the delivery (about 60-90 days after the deposit) via a Paypal invoice. Matthew Nelson (left) and colleague with a UL24 at the NASA MU69 mission in 2017, UL18 on the Cover of Astronomy Technology Today, Hubble Optics contributed a 40" Hubble Sandwich Mirror to the NASA SpaceX Falcon9 CRS-11 mission. 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. The 20” fused conical parabolic primary mirror is exclusively designed for the Skywatcher Stargate. Posted on August 11, 2017 by Jaybee. No ladder is needed for most people; while you may need one-step ladder for an f/5 when close to zenith direction. Astronomics is a family-owned business that has been supplying amateur astronomers, schools, businesses, and government agencies with the right optical equipment and the right advice since 1979. Machined with Computer Numerical Control (CNC) technology and hand fitted to assure proper fit and finish. A deluxe quick release double-ring Finder Bracket including a dovetail base is included. In a simple pivoted bolts collimation system, the collimation of the primary mirror may cause the sling belt to pull the mirror axially on the mirror edge, bending the mirror to a potato-chip shape, causing annoying astigmatism. It’s thinner construction is lighter in weight than a traditional primary and allows the mirror to cool down more quickly. DOB 8" Traditional. One of the many benefits to becoming a customer of High Point Scientific is that you receive Unlimited Tech Support on all of the products you purchase from us. Here is a link to other Dobsonian telescopes in hopes that you might find a great alternative. Completed with deluxe and environmentally friendly black powder coating, it is such a pleasure to look at, not to mention the enjoyment to look through. For the best experience on our site, be sure to turn on Javascript in your browser. Rich Mitchell is holding the secondary mirror, Hiroaki with his UL20. base, and luckily, they are closest to the ground! Three 2.3 pound counterweights (included) allow you to adjust balance, and adjustable feet on the base assist you in leveling the telescope. The deep red illumination can be adjusted for brightness. The GoTo version of the 20" Stargate Truss Tube Dobsonian uses Skywatcher's tried-and-true SynScan computerized system. Free shipping when ordered with the system. (f/3.7), ~89 lbs (f/4.2), Additional, optional accessories: 8x50 Finder, Shroud, Wheelbarrow, Vinyl foam Cushioned Grips, Other features: Sling lateral support and deluxe push-pull brass knob collimation screws, Light Weight Red Dot Finder Scope with Brackets and Dovetail: $45. Please understand the surface shipping is a great value, but may take more than additional 10 weeks for the delivery. Made from the top quality Nylon/Lycra blended materials, it is one of the options you would really like to have. If you'd like some advice on choosing the best telescopes or accessories to meet your needs, please don't hesitate to call us at 1-800-266-9590 or send an email. A top quality 50mm achromatic finder offering an inverted and reversed image, perfect for Newtonian Telescope. However, even though the SkyWatcher 20” StarGate Truss Tube Dobsonian is a monster light bucket, it is still reasonably portable for many adults due to its modular build. It is really the time to have one, if you still don't have one yet! (Colour of the product image is for reference only, actual colour of the product may vary dpending on distributor) PRODUCTS. We are happy to help! Where I am located south-west of Buffalo NY near lake Chautauqua, mostly have the jet stream overhead and never have stable seeing, except in the summer months. (3) 2.3 lb. Free shipping when ordered with the system. It is a zero-backlash "Crayford-style" design further enhanced with modern "linear bearings" meaning you get a rock-solid, super smooth focusing experience that can handle the weight of even the heaviest of modern eyepieces. For EU customers, please contact Astroshop EU for their wonderful services: For Japanese customers, please contact Kokusai Kohki and Astro Street for their wonderful services: To see our listings of already stocked (miscellaneous) items, please visit our E-bay, by clicking here, The SpaceX Falcon9 CRS-11 mission launched on Jun 3, 2017, A quantum leap in optical performance - the UL 20 Truss Dobsonian telescope's huge 20" diameter primary mirror gathers more than 6 times more light than popular 8" reflectors or almost three times of the light grasp of a 12" telescope, A Premium, Light, Compact and Portable Design - About half the weight of traditional Dobsonian telescopes, Outstanding Images - Premium quality, diffraction limited Newtonian optical systems will deliver stunning views of the heavens from dark sky sites, Light, Strong, Compact and Extremely Portable - The Hubble UL20 features a precision-machined all-metal construction. You don't need it if you store the scope in a luggage case or the custom made backpack. Apertura Accessories 15% Off - Use Code APERTURA15 At Checkout! Learn more. Main menu. The smaller stainless steel focus control adjusts focus at a rate 8 times finer than the larger focus wheels. There will be $15 additional charge for the surface delivery, or $25 additional charge the air delivery. The focuser has 50mm of travel distance. SDM Telescopes 20-40 inch custom built classic style Dobsonians. Our sandwich mirror will reach thermal equilibrium up to 10 times faster than a traditional solid mirror and means the mirror can deliver great views even as the air around the telescope is changing temperature. Both f/3.7 and f/4.2 will provide you the excellent views. Collimation Eyepiece When unassembled, it can look a bit daunting to put together, but due to labeled truss anchor points, you can assemble your Stargate Dob quickly! DOB 10" Collapsible. Customers should communicate directly with the manufacturer regarding details of their warranty, as warranties have a tendency to change without notice. At High Point all in stock orders ship within 24 hours, pending internal credit card approval. It already, then click below does not include shipping transit time the. Which is nice when you are searching for fainter objects perfect for Telescope... 96 % enhanced Coating - the state of the art 96 % enhanced Coating on the primary and allows mirror. The deluxe waterproof Nylon material with draw-string cord 2-inch diameter Focuser love the smooth, movements... Built into the end, it is one of the product image is for only. Goto version of the reticle can be adjusted, which is nice when are... At Checkout Shroud, and visual impact the SkyScan hand controller is easy... Specifications below the mirror quality is excellent... '', Wanted to take the time to.... Here is a link to other Dobsonian telescopes in hopes that you might a... 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