2" Dual-Speed Linear Power Focuser: The new linear power focuser utilizes 4 precision ball bearings to support the drawtube and provide great stability and zero image shift while supporting a heavy eyepiece or camera. Moving the drawtube by the roller rather than a rack and pinion ensures exceptionally smooth operation, great feel, and precise adjustability. The dual-speed feature has a second focus knob that has a 10:1 speed reduction to provide the super-fine adjustments even the most demanding users can appreciate.
Pyrex Mirrors: Features paraboloidal primary mirror made of low thermal expansion Pyrex glass resulting in substantially shorter cooling-down times.
Parabolic Primary Mirrors:
Features High Quality Parabolic Primary Mirrors to eliminate spherical aberrations inherent in 'fast' focal length reflectors with spherical primary mirrors. The mirrors are parabolized to bring all the light rays to the same focal point to give sharp, contrast images, which are full of detail.
Sky-watcher Deluxe Mirror Coatings:
Most reflectors today usually have a coat of aluminum as the mirror surface and then an overcoat of silicon monoxide or silicon dioxide to protect it. Silicon dioxide produces a much more durable coat than silicon monoxide but requires specialized equipment to apply it and is therefore more expensive. Protection is needed, because in most reflectors, the mirror is open to the elements and deterioration of the reflective layer reduces the resolution of the telescope. ALL Sky-Watcher reflectors are Multi-Coated with Silicon Dioxide as standard for Optimum Durability and Long Term Performance.
Features: SkyWatcher QUATTRO-250P 250mm F/4 Dual-Speed Parabolic Newtonian Telescope
Specificatons: SkyWatcher QUATTRO-250P 250mm F/4 Dual-Speed Parabolic Newtonian Telescope
Kit Content
SkyWatcher QUATTRO-250P 250mm F/4 Dual-Speed Parabolic Newtonian Telescope
Instructions Manual
Tube Rings
Dovetail Bar
Finderscope
Manufacturer Warranty
For more information about, Skywatcher Quattro 10S Dual Speed Imaging Newtonian Telescope website.
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