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Sky-Watcher Skyliner-150P Telescope
Dobsonian telescopes offer an incredible aperture-to-priceratio. The Dobsonian mount, popularized by John Dobson in the 1970.s, is asimple and efficient method of mounting a Newtonian reflector, based on theAlt-Azimuth principal. Fast and easy to set up, the Dobsonian mount consists ofa box-type mounting which allows the telescope to pivot in altitude, while thebox itself is rotated on a base in azimuth. The secret of the design is tocorrectly balance the optical tube and use frictional materials which allow itto be moved easily when nudged but to stay in position when not. The mount isdesigned to be driven by hand as opposed to slow motion controls. Sky-WatcherDobsonians provide excellent all round performance for the observation the Moonand Planets and Deep Sky Objects such as Galaxies and Nebulae.Specification Magnifications (with eyepieces supplied): x48 & x120 Highest Practical Power (Potential): x306 Diameter of Primary Mirror: 153mm Telescope Focal Length: 1200mm (f/8) Eyepieces Supplied (1.25″): 10mm & 25mm Parabolic Primary Mirror 0.5mm Ultra-Thin Secondary Mirror Supports 6×30 Finderscope Direct SLR Camera Connection Wooden Alt-Azimuth Mount with Accessory Tray 73% more Light Gathering than 114mmPARABOLICPRIMARY MIRRORSFeatures High Quality Parabolic Primary Mirrors to eliminate sphericalaberrations inherent in ‘fast’ focal length reflectors with spherical primarymirrors. The mirrors are parabolized to bring all the light rays to the samefocal point to give sharp, constrasty images, which are full of detail.
SKY-WATCHER DELUXE MIRRORCOATINGSMost reflectors today usually have a coat of aluminium as the mirror surfaceand then an overcoat of silicon monoxide or silicon dioxide to protect it.Silicon dioxide produces a much more durable coat than silicon monoxide butrequires specialized equipment to apply it and is therefore more expensive.Protection is needed, because in most reflectors, the mirror is open to theelements and deterioration of the reflective layer reduces the resolution ofthe telescope.ALL Sky-Watcher reflectors are Multi-Coated withSilicon Dioxide as standard for Optimum Durability and Long Term Performance.
Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Worcester, Worcestershire
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