Join the growing number of happy users of GSO quality telescopes! We are very proud of GSO´s exceptional image quality at a very affordable price. Thousands of objects are within reach of this 8" Newtonian telescope. With its highly refined Dobsonian style mount the telescope is the ideal companion for discerning beginners and for advanced observers alike! Galaxies will reveal their spiral structure. Planetary nebulae will display splendid detail where a smaller telescope will hardly show anything.

The quality optics from GSO will at the same time offer razor sharp images even at high magnifications. Planets and the moon will be seen in great detail. The visibility of details is not limited by the telescope, but rather by the observing conditions!

New Altitude Tension and Balancing System On most Dobsonian telescopes the altitude bearing is a very simple design. GSO has developed an improved altitude bearing with additional functionality: A strong steel shaft bears the weight of the tube. The tube is guided and kept in position through two CNC machined surfaces. The desired tension can be freely adjusted with a large knurled knob on both sides. This is particularly helpful when changing eyepieces where the telescope is temporarily out of balance also you can adjust the balance of the tube.

The telescope can be balanced by moving it up or down a couple of centimetres. This may be necessary when adding a second finderscope (e.g. a Telrad) or when using very heavy eyepieces or a binoviewer. A scale on both sides allows you to easily achieve a symmetric bearing position.

Azimuth Roller Bearing A modern industrial roller bearing is attached in the azimuth, so you can easily move the scope. 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.

Characteristics:

• Parabolical main mirror - better, than diffraction limited
• 94% forced reflection
• Aperture 250mm, focal lenght 1.250mm, f/5.0
• 2" Crayford focuser - 1:10 micro - reduction, adapter from 2" to 1¼"
• Rigid metal tube for good mechanical stability
• Tube weight appr. 9.5kgs

Delivery:

• GSO Dobsonian 250/1250mm Telescope
• 2" Crayford focuser - 1:10 micro - reduction, adapter from 2" to 1¼"
• 2" Extension tube
• 30mm 2" Wide Angle ERFLE with 70° field for good overfiew
• 9mm Super Plössl 1¼" - multicoated
• Eyepiece and accessory tray for eyepieces and filters
• Collimation manual