2100, 9 mm Plossl Eyepiece 1.25" . . . Download Instruction Manual of 254/1250 Dobsonian Reflector Telescope in .PDF format. Comes with a large 8x50 Multi-Coated Achromatic Finder scope GSO Dobsonian Telescopes are fully manufactured using CNC Machines and they are MADE IN TAIWAN, not CHINA like other brands. The 8 x 50mm finderscope mounts in a quick release bracket that slips into a pre-installed metal mounting shoe nearer the focuser. The SkyLine 12" Dobsonian telescope features a machined, 2" Crayford focuser with dual-speed adjustment control and smooth, backlash-free motion. . . The 2" focuser barrel features a brass compression ring so your eyepieces and other accessories will not be marred by the set-screw. 2280, 12 mm Plossl Eyepiece 1.25" . The finest focuser GSO manufacturer has to offer. . 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. Suggested Accessories with this Telescope. A Cooling Fan that quickly equalises the temperature of the mirror with surrounding air. The bracket has two hand-adjust collimation screws that work in conjunction with a third spring-loaded post in the bracket. 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. This is another major improvement of this new altitude bearing system. In this position tracking is almost impossible in some Dobsonians! . GSO Professional Dobs come with a 2" Wide Angle Super Plossl eyepiece for Wide Angle / Deep Space Observation [Unavailable in other brands] . . 2" Precission Micro 10:1 Crayford style focuser". GSO makes the World's Finest Astronomical Mirrors with surface accuracy of 1/12 wave. Rs. At the easiest (lightest) setting, the focuser moves extremely smoothly. Purchase Dobsonian telescopes today and save! High-Quality Construction and Features Manufacturers & Suppliers of Astronomical Telescopes in India, 12inch Professional Dobsonian Telescope by GSO. . . Instead of the usual large circular trunnion bearings riding on a few Teflon pads in the semi-circular cutouts in the altazimuth base, the STAR TRACKER Dob uses innovative sealed metal ball-bearing systems to provide smooth vertical motion of the optical tube. . GSO makes the World's Finest Astronomical Mirrors with surface accuracy of 1/12 wave. Orion 10023 SkyQuest XX12i IntelliScope Truss Dobsonian Telescope. . This little telescope will show many objects in direct vision for easy location. The focuser is the most "visible" part of any telescope with the exception of the optics themselves. . . It's only a few months old. 2100, Mobile Cell Phone Adapter . Why chose a GSO Dobsonian Telescope over other brands ? This Instructable describe the planning, design, and par… Page 1 of 4 - 10'' or 12'' Dobsonian as first telescope? The inner draw-tube barrel is anodized black and features a laser-etched scale. . . The focuser has two large thumbscrews on the underside. Rs. A lightweight 4.7” diameter low-vibration cooling fan is built into the mirror cell to assure faster cool-down times. . 4800, GSO 2x ED-Barlow-Lens (Multicoated) . GSO Dobsonian Telescope with an ADVANCE ROCKER BASE, 2" Crayford focuser - 1:10 micro - reduction from 2" to 1.25", 30 mm 2" Wide Angle ERFLE with 70° field for good overfiew, Eyepiece and Accessory Tray for Eyepieces. 2100, GSO SuperView 15mm 1.25" Wide Angle Eyepiece . The mirror is ground and polished under computer control for guaranteed diffraction limited performance, coated with 91% reflectivity aluminum, and overcoated with a protective layer of silicon dioxide (quartz) for long life. . Smooth Focusing Action The fine-focus control knob allows you to dial-in details at a 10:1 ratio compared to the coarse focus knobs for ultra-precise focusing. Rs. Rs. The inner barrel is baffled and painted a flat black to minimize reflections for maximum contrast. The focuser is the most "visible" part of any telescope with the exception of the optics themselves. It's in "NEW" condition. - posted in Reflectors: Hello everyone! Rs. 3. The features :: 1. A gentle twist on either knob adjusts the amount of friction within the altitude ball-bearing systems. . B270 “water white” optical crown glass, coated with 91% reflectivity aluminum and overcoated with a protective layer of silicon dioxide (quartz) for long life. The open frame of the cell allows the mirror to cool down to ambient temperatures quickly, so you can start observing sooner. Rs. We guarantee a diffraction-limited performance, which essentially means that the performance is limited by observing conditions and the laws of physics. 4800 (include), GSO SuperView 42mm 2" Wide Angle Eyepiece . This makes collimation faster than the traditional three- or six-screw collimation methods used with conventional finder brackets. 12” (304mm) diameter, 1520mm focal length, f/5 focal ratio with surface accuracy of 1/12 wave. GSO's rated load capacity for their Crayford focusers is about 3 kgs. . Rs. 2550, 20 mm Plossl Eyepiece 1.25" . Rs.4800, Eyepiece Projection Camera Adapter . . Rs. The mirror is made of B270 “water white” optical crown glass that is free of internal stress and striae. . . Rs. The inner drawtube glides on 4 precision bearings and a roller shaft and provides. GSO Professional Dobs come with a 2" Wide Angle Super Plossl eyepiece for Wide Angle / Deep Space Observation, GSO's CNC Machined Crayford focuser comes with a 2" 'DUAL SPEED' 1:10 Micro Focusing Capability, GSO Professional Dobs come with Tube Balancing System that allows you to perfectly balance the tube when you add an additional DSLR Camera to the telescope, The new Altitude Metal Ball Bearings and Clutch System provides smooth vertical motion of the optical tube. Rs. Rs 2640, 25 mm Plossl Eyepiece 1.25" . . The absense of Roller Ball Bearings in other branded Dobsonian Telescopes makes it very difficult to move the telescope on the wooden base. This may be necessary when adding or using very heavy eyepieces or a Camera. Tension Adjustment and Focus-Lock A standard equipment eyepiece tray attaches to the side of the scope’s altazimuth base. DOBSONIAN- wooden / with Roller Bearing wooden base / Clutch mount with tension knob. 2100 (include), 6 mm Plossl Eyepiece 1.25" . Sky-Watcher Flextube 300 SynScan Dobsonian 12-inch Collapsible Computerized GoTo Large Aperture Telescope 4.3 out of 5 stars 19 Sky-Watcher Classic 250 Dobsonian 10-inch Aperature Telescope – Solid-Tube – Simple, Traditional Design – Easy to Use, Perfect for Beginners This is a LIKE NEW Dobsonian Orion 12 inch SkyQuest XT12i Automated IntelliScope. . The GSO Dobsonian line is particular model serves a very clear purpose, to offer a large aperture and an excellent image quality at reasonable cost. . [ Subject To Availability ]. Homemade 12.5 Inch Dobsonian Telescope: How to build a 12.5 inch closed tube Dobsonian telescope. 12" DOBSONIAN TELESCOPE - *Used Once - ORION XT12i. I bought this from Orion in late 2015. . Page 1 of 3 - Consensus on "best" 10-12 inch Dobsonian? . Why chose a GSO Dobsonian Telescope over other brands ? 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. I am going to get my first telescope and I decided to go for a classic Dobson, but Im not sure which would be better: a 12 or a 10 + eyepieces (from the cost difference of the telescopes). Indoor kept in … Fully adjustable 3-point flotation system metal cell holds the primary mirror. . Rs. 2820, 32 mm Plossl Eyepiece 1.25" . 70mm m.a. Rs. . Azimuth Roller Bearings provided at the bottom of the Dobsonian base allows super fine horizontal tracking of celestial objects. Rs. Large hand-tighten color-coded push-pull collimation and collimation lock knobs make it easy to collimate the primary mirror with no tools required. . This 12-inch Dobsonian telescope comes with a twelve-inch parabolic primary mirror that is specially designed to capture a large amount of the light and to produce perfectly crisp and bright images of the object you are observing. 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" .

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