Details
Details
D=203 / F=1200mm Dobsonian F/6 Telescope
8x50 finderScope
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Optical Quality
The heart of any telescope is its optics. GSO produces parabolic primary mirrors of very high quality. It is our firm opinion that GSO offers better mirrors in this price range. We guarantee a diffraction-limited performance, which essentially means that the performance is limited by observing conditions and the laws of physics.
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Two eyepieces: 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. |
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New Altitude Tension & Balancing System:
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Primary mirror cooling fan: A lightweight 4.7” diameter low-vibration cooling fan is built into the mirror cell to assure faster cool-down times. 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.
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GSO 2" Dual speed Crayford Focuser: The focuser is the most "visible" part of any telescope with the exception of the optics themselves. 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.
1. Smooth Focusing Action 2. High-Quality Construction and Features The 2" focuser barrel features a brass compression ring so your eyepieces and other accessories will not be marred by the set-screw. Also included is a 1.25"-2" adapter with brass compression rings that is threaded to accept standard 2" filters. The inner draw-tube barrel is anodized black and features a laser-etched scale. 3. Tension Adjustment and Focus-Lock |
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Eyepiece tray: A standard equipment eyepiece tray attaches to the side of the scope’s altazimuth base. It has cutouts to hold one 2” eyepiece and three 1.25” eyepieces. |
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Azimuth Roller Bearing:
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. This becomes particularly obvious when the telescope is pointed near the zenith so that the lever arm becomes very short. In this position tracking is almost impossible in some Dobsonians! The new GSO Dobsonians have a modern industrial roller bearing for a very easy movement. Metal plates above and below the bearing prevent the rollers from sinking into the softer wood of the rocker box, so the movement will remain smooth even after years of use. |
TELESCOPE SPECIFICATION
Optical Design
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Newtonian reflecing Telescope
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Primary Mirror | 8 inch Parabolid 1/12 wave. Precisely figured parabolic mirror - diffraction limited / BK7 94% enhanced coating |
Diameter
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203mm
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Focal Length | 1200mm |
Focal Ratio | F/ 6 |
Highest Practical Power | 480 |
Faintest Steller Magnitude | 14.2 |
Resolving Power
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0.57 Arc - Seconds.
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Focuser diameter |
2" Precission Micro 10:1 Crayford style focuser". A Dual-Speed 10:1 ratio focuser is now included for excellent focusing precision. |
Eyepiece Standard 2" | Premium Widefield SP 30mm (2") 68° field SuperView eyepiece with a wide 1.7° actual field of view that’s well over three times the diameter of the full Moon. |
Eyepiece Standard 1.25" |
Premium Plossl 9mm (1.25") 52° field.
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Magnification with eyepiece | 40x & 133.3x |
Finder | 8x50mm Fully multi-coated achromatic finder |
Mount type
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DOBSONIAN- wooden / with Roller Bearing wooden base / Clutch mount with tension knob
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Mirror Cell
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3 points mirror cell with cooling fan
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Accessories Tray | 2 inch Eyepieces tray |
Mirror stabiliser | Cooling fan for "thermal equilibrium" Battery-operated primary mirror cooling fan |
Total Height | 52 inch |
Tube length | 45.25 inch |
Stand height | 27 inch |
Base diameter | 2o inch |
Shipping Weight | Tube : Net weight - 13 Kg / Gross weight: 15 Kg Stand: Net weight - 12Kg / Gross weight: 14 Kg |
Shipping Carton Dimension
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Tube : 32 x 40 x 128 cm3 |
Additional Info
Additional Info
Colour | White |
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Product Name | Telescopes |
EAN/UPC Code | No |
Optical Zoom | No |
Aperture | No |
Brand Name | Star Tracker |