Sky-Watcher Skyliner-250PX FlexTube 10" Parabolic Dobsonian

Sky-Watcher Skyliner-250PX FlexTube 25cm (10 inch) Collapsible Dobson - 10157

Dobsonian telescopes offer an incredible aperture-to-price ratio. The Dobsonian mount, popularized by John Dobson in the 1970.s, is a simple and efficient method of mounting a Newtonian reflector, based on the Alt-Azimuth principal. 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 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 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
• 9x50 Finderscope (straight)
• Direct SLR Camera Connection
• 3-Point tube locking system
• Wooden Alt-Azimuth Mount with Accessory Tray
• 56% more Light Gathering than 200mm

Specification:

• Optical Design: Newtonian (Parabolic)
• Lens Material:
• Diameter: 254mm
• Focal Length: 1200mm
• Scondary Mirror Diameter: 58mm
• F/ratio: F/4.7
• Highest Practical Power: 508x
• Faintest Steller Magnitude: 14.7
• Resoving Power: 0.45
• Finderscope: 8X50 right angle
• Focuser diameter: 2" with 1.25" adapter
• Diagonal:
• Eyepiece(s): 1.25" Super 25 and 10*
• Mount Type: Dobsonian
• Slow-motion Control:
• Counterweight(s):
• Piggyback Bracket:
• Accessory Tray:
• Ground Board Diameter: 520×740
• Ground Board Weight(s): 12.5Kgs
• Motor Drive:
• Go-to:
• Tube Weight: 15Kgs
• Tube Dimension(dia. x length): 380×(800-1120)
• Tripod Height:
• Shipping Weight:
• Shipping Carton Dimensions: 97x55x40(cm3) / 79x68x13(cm3)