SkyWatcher Skyliner 250PX Parabolic Dobsonian Telescope

These instruments offer an incredible aperture-to-price ratio. The Dobsonian mount, popularized by John Dobson in the late 1970’s, is a very simple but effective method of mounting a Newtonian Reflector, based on the alt-azimuth principle. Fast and easy to set up, the Dobsonian mount consists of a box-type mounting which allows the telescope to pivot in altitude, while the box itself is rotated on a base in azimuth. The secret of the design is to correctly balance the optical tube and to use frictional materials, which allow it to move easily when nudged but to stay in position when not. The mount is designed to be driven by hand as opposed to slow motion controls.

Sky-Watcher Dobsonians feature a unique patented Tensioner/Carrying handle. By lifting the handles together, you can easily carry the whole unit in an upright position with the help of a friend.

ADVANCED FEATURES
All Sky-Watcher Dobsonian models feature 0.5mm Ultra-Thin Secondary Mirror Supports to reduce diffraction spikes & light loss, and high quality Paraboloidal primary mirrors to eliminate spherical aberration.


PYREX MIRRORS
The SKYLINER 250PX models feature Paraboloidal primary mirrors made of Low Thermal Expansion Pyrex Glass resulting in substantially shorter cooling times.


Magnifications (with Eyepieces supplied): x48 & x120
Eyepieces Supplied (1.25"): 10mm & 25mm
Highest Practical Power (Potential): x508
Diameter of Primary Mirror: 254mm
Telescope Focal Length: 1200mm (f/5)
Dual-Fit 1.25"/2" Focuser
Parabolic Primary Mirror (Pyrex Glass)
0.5mm Ultra-Thin Secondary Mirror Supports
9x50 Finderscope
Direct SLR Camera Connection
Wooden Alt-Azimuth Mount with Accessory Tray
56% more Light Gathering than 200mm

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