The other thumbscrew on the eyepiece end can be used to adjust the tension of the focuser to achieve a focusing "feel" that you like. 4.4 out of 5 stars 411. "Kit" price offers you significant savings. Telescope MIrror Sets to purchase online. The parabolic mirror size from 6" to 24", all of these mirrors were made by BK7 or Quartz quality optical glass, all mirrors have an enhance aluminum reflective coating, reflectivity is approximately 93%. The battery-operated fan is powered by a battery pack that uses eight user-supplied AA batteries and plugs into a jack on the mirror cell frame. . 8 Inch telescope mirror. . Smooth Focusing Action Parabolic mirror: GSO offers very HIGH quality parabolic mirrors for the people who want to build their own telescopes or DIY project. We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much more. Jim's Mobile, Inc. (JMI Telescopes) is a world renowned manufacturer of astronomical telescopes and aftermarket accessories for the amateur and professional astronomer. . . B270 glass is equivalent to BK7 in performance and optical quality. The open frame of the cell allows the mirror to cool down to ambient temperatures quickly, so you can start observing sooner. Why chose a GSO Dobsonian Telescope over other brands ? . . . $19.99 $ 19. $5.00 shipping. Fully multicoated 2” 30mm (40x) 68° field SuperView Erfil design eyepiece with a wide 1.7° actual field of view that’s almost three and a half times the diameter of the full Moon. 26 watching . The telescope can be balanced by moving it up or down a couple of centimetres. . B270 glass is equivalent to BK7 in performance and optical quality. . Only 7 left in stock - order soon. or Best Offer. C $64.06 shipping. The thumbscrew on the telescope side can be used to lock the focuser, allowing the use of heavy accessories or cameras without fear or slippage or losing focus. . . In this position tracking is almost impossible in some Dobsonians! . This allows you to keep the focuser from rising or sinking when changing between eyepieces of considerably different weights, as for instance when switching between 1.25” and 2” eyepieces. We guarantee a diffraction-limited performance, which essentially means that the performance is limited by observing conditions and the laws of physics. There may be delays with regard to shipments due to outside circumstances beyond our control, but we continue to perform our optical … You get Primary and Secondary Mirrors, Spider and Diagonal Holder, Focuser, Eyepiece, Finder Scope and more! Also included is a 1.25"-2" adapter with brass compression rings that is threaded to accept standard 2" filters. As a general rule, mirrors having moderate focal ratios other than those specified below will be charged $100 extra for 8 and 10 inch sizes and $150 for 12.5 through 16 inch sizes to cover special tooling costs and additional set-up and manufacturing time. Primary Mirror: 8” (203mm) diameter, 1200mm focal length, f/5.9 focal ratio with surface accuracy of 1/12 wave. 47mm m.a. In this article I will walk you through a variety of 8 inch telescopes and go over some of the important points, and of course, I will give you some guidelines when it comes to price. Devi avere almeno 18 anni per entrare in questa sezione. Write a Review. A 20-inch telescope mirror for sale will collect 6.25 times more light than an 8-inch telescope mirror will. You touch the focuser all the time, the focuser is responsible for holding your eyepieces or camera in position and moving them precisely into focus in the first place. This way ultra-precise focus motion is possible for both visual and particularly photographical applications. Ending Nov 29 at 4:17PM PST 5d 14h. Include a mirror mount It is probably f6 but never measured Free shipping . High-Quality Construction and Features The focuser has two large thumbscrews on the underside. A simple teflon friction bearing used by some other manufacturers (also by GSO in the past) offers a rather stiff motion that makes tracking at high magnifications difficult. Because the bearings are sealed systems, the elements cannot affect the smoothness of the vertical motion, as it can when dust and grit invariably get trapped between the exposed trunnions and Teflon pads of conventional Dobsonians and scores the surfaces. $2,700.00. However, the price of the mirror increases as the mirror gets larger. GSO 8" f/6 Parabolic Primary and 50mm Secondary Telescope Mirror Set. In stock on December 30, 2020. A standard equipment eyepiece tray attaches to the side of the scope’s altazimuth base. The vertical motion of the STAR TRACKER tube is consistently ball-bearing smooth. 2100 (include), 6 mm Plossl Eyepiece 1.25" . 1560, GSO 1.25" 32mm Camera Projection Lens (CPL) eyepiece ... Rs. Our #: PATM-GS-P8F6SET. The curvature of the primary mirror dictates the focal length of the telescope. Condition is "Used". Rs. High-precision Parabolic Lens DIY Newtonian Reflection telescope Dia.203 F750. Condition is "Used". Telescope Mirrors assorted . Manufacturers & Suppliers of Astronomical Telescopes in India, 8inch Professional Dobsonian Telescope by GSO. | Shopping Italia Free shipping. 18 INCH Glass Reflector Telescope Mirror Lens Optical Optics 1” Thick. GSO produces parabolic primary mirrors of very high quality. A Cooling Fan that quickly equalises the temperature of the mirror with surrounding air. The 2" focuser barrel features a brass compression ring so your eyepieces and other accessories will not be marred by the set-screw. 4800, GSO 2x ED-Barlow-Lens (Multicoated) . Rs. . B270 “water white” optical crown glass, coated with 91% reflectivity aluminum and overcoated with a protective layer of silicon dioxide (quartz) for long life. Ending Dec 2 at 9:12AM PST 8d 7h. 4800, GSO SuperView 50mm 2" Wide Angle Eyepiece . 3kgs with a firm friction setting, 1:10 dual speed microfocuser for far improved focusing precision, 2" to 1.25" adaptor with compression ring and 2" filter thread, 40mm Plossl Eyepiece 1.25" . . B270 “water white” optical crown glass, coated with 91% reflectivity aluminum and overcoated with a protective layer of silicon dioxide (quartz) for long life. Our Price: $230.00. . Tension Adjustment and Focus-Lock FREE Shipping by Amazon. $799.00 $ 799. . Rs. 2820, 32 mm Plossl Eyepiece 1.25" . . . Special Notice-We want to let our customers know that during this timeframe we continue to do business as usual. Rs. This may be necessary when adding or using very heavy eyepieces or a Camera. . 8 inch f/6 Mirror Set, Primary Mirror, Secondary Mirror Price: US$ 259.95 ... Telescope Kits, Parts and Accessories! GSO Dobsonian Telescopes are fully manufactured using CNC Machines and they are MADE IN TAIWAN, not CHINA like other brands. . The focuser is the most "visible" part of any telescope with the exception of the optics themselves. Zambuto Optical Company is a full service custom manufacturer of premium Newtonian primary telescope mirrors from 7" through 24" diameter. This makes collimation faster than the traditional three- or six-screw collimation methods used with conventional finder brackets.

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