Product Description
Skywatcher Skyliner-250PX FlexTube 10 inch Dobsonian Telescope
Dobsonian telescopes offer an incredible aperture-to-price ratio. The Dobsonian mount, popularized by John Dobson in 1970's, is a simple and efficient 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 that 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 use frictional materials which allow it to be moved 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 provide excellent all-round performance for the observation of the Moon and Planets and Deep Sky Objects such as Galaxies and Nebulae.
- Magnifications (with Eyepieces supplied): x48 & x120
- Highest Practical Power (Potential): x500
- Diameter of Primary Mirror: 254mm
- Telescope Focal Length: 1200mm (f/5)
- Eyepieces Supplied (1.25"): 10mm & 25mm
- Dual-Fit 1.25"/2" Crayford Focuser
- Parabolic Primary Mirror
- 0.5mm Ultra-Thin Secondary Mirror Supports
- STRAIGHT 9x50 Finder
- Direct SLR Camera Connection
- 3-Point tube locking system
- Wooden Alt-Azimuth Mount with Accessory Tray
- 56% more Light Gathering than 200mm
| Optical Design | Newtonian (Parabolic) |
| Diameter | 254mm |
| Focal Length | 1200mm |
| Secondary Mirror Diameter | 58mm |
| F/ratio | F/4.7 |
| Highest Practical Power | 508x |
| Faintest Steller Magnitude | 14.7 |
| Resolving Power | 0.45 |
| Finderscope | 8X50 right angle |
| Focuser diameter | 2" with 1.25" adapter |
| Eyepiece(s) | 1.25" Super 25 and 10* |
| Mount Type | Dobsonian |
| Ground Board Diameter | 520×740 |
| Ground Board Weight(s) | 12.5 Kgs |
| Tube Weight | 15 Kgs |
| Tube Dimensions (dia. x length) | 380× (800-1120) |
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