Ī Cooling Fan that quickly equalises the temperature of the mirror with surrounding air. The new Altitude Metal Ball Bearings and Clutch System provides smooth vertical motion of the optical tube. 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 GSO's CNC Machined Crayford focuser comes with a 2" 'DUAL SPEED' 1:10 Micro Focusing Capability. Ĭomes with a large 8x50 Multi-Coated Achromatic Finderscope GSO Professional Dobs come with a 2" Wide Angle Super Plossl eyepiece for Wide Angle / Deep Space Observation. GSO makes the World's Finest Astronomical Mirrors with surface accuracy of 1/12 wave. GSO Dobsonian Telescope with an ADVANCE ROCKER BASEĢ" Crayford focuser - 1:10 micro - reduction from 2" to 1.25"ģ0 mm 2" Wide Angle ERFLE with 70° field for good overfiewĮyepiece and Accessory Tray for Eyepiecesĭust Cap Why chose a GSO Dobsonian Telescope over other brands ? The deluxe model comes with 2" Micro 10:1 Crayford style focuser and 1.25" adapter. Set-up is as easy as you can imagine very simple assembly with the rocker box and put it on the ground, insert the telescope tube and put the springs in position and you're ready to go to navigates through the night sky by simply moving the tube up or down, or side to side, by hand.Īll GSO dobsonian use optical quality BK7 glass, cooling fans built into the rear cell to decrease cooling times, also all dobs use a roller bearing on the azimuth surface providing dozens of support points for smooth swivel motion. If you consider that the focuser is the telescope part that is used most often, the supply of the Hexafoc on this telescope is a quantum leap for this price range.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. An optional dual speed 10:1 gear reduction for the focuser is available for those who need extra fine control of focus. This is another strength of this universal telescope: if you want to take photos, you can simply unscrew the elevation wheels from the tube and place it on an equatorial mount with a standard dovetail rail - other rival Dobsonians do not offer this level of flexibility or pathway to more expansive astrophotography use. The unsurpassed rigidity of the focuser makes it easy to focus - photography with this OTA is no problem either as the supplied extension tube for the focuser can be removed and a camera easily bought to a prime focus position. And when a lot of heavier accessories are attached, such as the Bresser Binoviewer attachment, then the entire telescope tube can be moved within the tube rings - and everything is balanced again in a flash. The large elevation wheels also hold the telescope level with just the right amount of "sticktion", even when heavier eyepieces are used. This Dobsonian is unsurpassed in versatility within its price range: the excellent, large Hexafoc focuser has an opening of 65 mm - so even with large wide-field eyepieces, there is no noticeable vignetting from the eyepiece extension tube. Details become visible in most deep-sky objects: globular clusters are broken down into individual stars and nebulae, which are only hinted at in smaller scopes, show considerable structure. With its 254 mm diameter optics, this telescope is not limited to solar system observation of the Moon and brighter planets - you can also observe far out into the universe and see globular clusters, nebulae and galaxies. Despite the low price, it offers a variety of functions and quality that are sometimes unavailable in considerably more expensive telescopes. The BRESSER Messier 10 "Dobsonian is something very special.
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