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. . 2" Precission Micro 10:1 Crayford style focuser". CNC machined from aluminum and anodized black, this focuser comes with a base plate adapter to attach to reflector telescopes. . . Rs. . Rs. The telescope can be balanced by moving it up or down a couple of centimetres. I love my 6 Dob, mostly because I can easily carry both pieces the short distance from the car or the house to an observing site. - posted in Reflectors: Hello everyone! Homemade 12.5 Inch Dobsonian Telescope: How to build a 12.5 inch closed tube Dobsonian telescope. A standard equipment eyepiece tray attaches to the side of the scope’s altazimuth base. 4800, GSO 2x ED-Barlow-Lens (Multicoated) . 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 . Smooth Focusing Action 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. 2100 (include), 6 mm Plossl Eyepiece 1.25" . 4800 (include), GSO SuperView 42mm 2" Wide Angle Eyepiece . Also included is a 1.25"-2" adapter with brass compression rings that is threaded to accept standard 2" filters. It's only a few months old. Why chose a GSO Dobsonian Telescope over other brands ? Rs. Azimuth Roller Bearings provided at the bottom of the Dobsonian base allows super fine horizontal tracking of celestial objects. Suggested Accessories with this Telescope. Copyright © 2008 - Tejraj & Co. All Rights Reserved. The finest focuser GSO manufacturer has to offer. The thermal stability of B270 glass is generally better than the soda lime float glass used for the mirrors of most reflectors in this reasonable price range. 2280, 12 mm Plossl Eyepiece 1.25" . 2100, 4 mm Plossl Eyepiece 1.25" . 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. . A scale on both sides allows you to easily achieve a symmetric bearing position. High-Quality Construction and Features . . . B270 glass is equivalent to BK7 in performance and optical quality. . We guarantee a diffraction-limited performance, which essentially means that the performance is limited by observing conditions and the laws of physics. The focuser is the most "visible" part of any telescope with the exception of the optics themselves. 3,900, GSO 1.25" 40mm Camera Projection Lens (CPL) eyepiece ... Rs.4,080, GSO 2" 30mm Camera Projection Lens (CSV) eyepiece ... Rs.5,700, GSO 2" 42mm Camera Projection Lens (CSV) eyepiece ... Rs.5,700. I began building it in the spring of 2008, but the bulk of the work was done in July of 2008 with first light occurring on July 25. 1560, GSO 1.25" 32mm Camera Projection Lens (CPL) eyepiece ... Rs. The inner drawtube glides on 4 precision bearings and a roller shaft and provides. This Instructable describe the planning, design, and par… Page 1 of 4 - 10'' or 12'' Dobsonian as first telescope? . . . [ Subject To Availability ]. Comes with a large 8x50 Multi-Coated Achromatic Finder scope GSO Professional Dobs come with a 2" Wide Angle Super Plossl eyepiece for Wide Angle / Deep Space Observation [Unavailable in other brands] . Fully adjustable 3-point flotation system metal cell holds the primary mirror. Rs 2640, 25 mm Plossl Eyepiece 1.25" . The bracket is held in place in the mounting shoe by a single large hand-tighten knob that maintains the finder’s collimation, even if the finder is removed between observing sessions. . . A gentle twist on either knob adjusts the amount of friction within the altitude ball-bearing systems. Powerful 8x50 finderscope, multicoated objective lens. The bracket has two hand-adjust collimation screws that work in conjunction with a third spring-loaded post in the bracket. . 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. This little telescope will show many objects in direct vision for easy location. 2100, Mobile Cell Phone Adapter . Rs. The 8 x 50mm finderscope mounts in a quick release bracket that slips into a pre-installed metal mounting shoe nearer the focuser. . I bought this from Orion in late 2015. The focuser has two large thumbscrews on the underside. 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" . . Fully adjustable diagonal holder mounted on a low-diffraction four-vane thin spring steel spider. 2100, GSO SuperView 15mm 1.25" Wide Angle Eyepiece . 2550, 20 mm Plossl Eyepiece 1.25" . It is our firm opinion that GSO offers better mirrors in this price range. Orion 10023 SkyQuest XX12i IntelliScope Truss Dobsonian Telescope. . This negates the wobbly effect / air turbulance caused due to variations in temperature. Rs. The vertical motion of the STAR TRACKER tube is consistently ball-bearing smooth. Rs. Don’t let its massive size fool … 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. 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. . Rs. 3900. It's in "NEW" condition. 3000, GSO SuperView 30mm 2 " Wide Angle Eyepiece . A Cooling Fan that quickly equalises the temperature of the mirror with surrounding air. Why chose a GSO Dobsonian Telescope over other brands ? 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. . GSO's rated load capacity for their Crayford focusers is about 3 kgs. . . Rs. Rs. . . 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. . . 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. GSO makes the World's Finest Astronomical Mirrors with surface accuracy of 1/12 wave. 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. The 2" focuser barrel features a brass compression ring so your eyepieces and other accessories will not be marred by the set-screw. Rs. . 12” (304mm) diameter, 1520mm focal length, f/5 focal ratio with surface accuracy of 1/12 wave. B270 “water white” optical crown glass, coated with 91% reflectivity aluminum and overcoated with a protective layer of silicon dioxide (quartz) for long life. This is another major improvement of this new altitude bearing system. 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. It is far superior to most classic rack-and-pinion focusers: Large load capacity: Up to approx. . Rs.4800, Eyepiece Projection Camera Adapter . It is a great choice for everyone who is interested in astrophotography. 12" DOBSONIAN TELESCOPE - *Used Once - ORION XT12i. Rs. The heart of any telescope is its optics. At tighter settings, you can still use heavier accessories without sacrificing much of the smooth focuser action.