Product Code: 1527791

Sky-Watcher Quattro-250P Parabolic Dual-Speed Imaging Newtonian OTA

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Sky-Watcher Quattro-250P Parabolic Dual-Speed Imaging Newtonian Optical Tube Assembly. The new Sky-Watcher Quattro series with their fast f/4 focal ratios, have been specially designed for high quality astrophotography with short exposure times. They are of course also fine telescopes for visual observations. Their tube interiors have knife-edge ray traced baffles to ensure no light is lost, and stray light is kept out! Its paraboloidal primary mirror is made of low thermal expansion, fast-cooling Pyrex glass.

Sky-Watcher Quattro-250P Features

2" Dual-Speed Linear Power Focuser: The new linear power focuser utilises 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: Both models feature paraboloidal primary mirrors made of low thermal expansion Pyrex glass resulting in substantially shorter cooling-down times.

  • Highest Practical Power (Potential) x508
  • Diameter of Primary Mirror 250mm
  • Telescope Focal Length 1000mm (f/4)
  • Note: Eyepieces NOT supplied
  • 9x50 Finderscope
  • Parabolic Primary Mirror (Pyrex)
  • 2" (50.8mm) Dual-Speed 10:1 Linear Power Focuser
  • Tube Rings & Dovetail Bar
  • 0.5mm Ultra-Thin Secondary Mirror Supports
  • 56% more Light-Gathering than 150mm

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Product Specification

Eyepiece 1 Supplied without Eyepieces
Focal Length [mm] 1000
Focal Ratio [f|] 4.00
Included Accessories 9x50 Finderscope, 2 Inch (50.8mm) Dual-Speed 10:1 Linear Power Focuser,Tube Rings & Dovetail Bar
Magnification With Eyepieces Supplied [x] 508
Mount Type Optical Tube Assembly Only
Optical Design Parabolic Imaging Newtonian
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Product Code: 1527791-wex Manufacturers Part Number: 10239