Skywatcher QUATTRO-200P 205mm f/4 Dual-Speed Parabolic Imaging Newtonian (WITH LOW-EXPANSION BOROSILICATE MIRRORS)

Skywatcher QUATTRO-200P 205mm f/4 Dual-Speed Parabolic Imaging Newtonian (WITH LOW-EXPANSION BOROSILICATE MIRRORS)
£499.00 FREE shipping
Item number: 10238

Skywatcher Quattro 200P 205mm f/4 Dual-Speed Parabolic Imaging Newtonian OTA (WITH LOW-EXPANSION BOROSILICATE MIRRORS)

Our Price £499 Includes FREE UK Delivery*

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"The Quattro's tube is lined with a set of nine internal baffle rings. Their main purpose is to cut down on stray light entering the telescope tube, helping to improve image contrast, but they also lend a bit of extra stability to the tube structure....The Quattro-8S is fitted with a Crayford-style focuser that performed well. It has tension adjustment, focus-lock and a 10:1 dual-speed fine focusing option, and also comes with a 2-inch fitting that has a T-thread on its external side. This allows a good connection to be made between scope and camera with the right adaptor ring....Visually, the Pleiades looked like diamonds hanging in space, with a hint of nebulosity visible around the brightest star Merope. The stars were generally crisp and sharp, with good colour on show. The scope is superb for imaging too, delivering shots that appeared to have higher contrast t han the other scopes on test."
BBC Sky At Night Magazine (Quattro-8S model)

Superb 205mm f/4 Parabolic Optics made from  Low-Expansion Borosilicate Glass for faster Cool-Down and Superior Thermal Stability!

The Quattro 200P is a high-quality and fast 200mm f/4 instrument designed primarily for astrophotography but also works well for visual use. The telescope features a high quality, internally darkened rolled steel tube of excellent rigidity, with internal knife-edge baffles to eliminate stray light.  An optically matched Sky-Watcher M48 Super ED Coma Corrector (code 20231) is available separately for best astrophotography results. 

Supplied with a set of tube rings, 45mm dovetail bar, piggyback camera adaptor and a 9x50 fully multi-coated finderscope with crosshair reticle. 1.25” & 2” eyepiece adaptors are included allowing virtually any standard 1.25” or 2” eyepiece to be used. Equipped with a 2" Dual-Speed Linear Power Focuser that utilises 4 precision ball bearings to support the drawtube and provides 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.

The heart of any Newtonian telescope is in the quality of its mirror optics. The accuracy of the figure, the material they are made from, and the coatings applied all play an important part. Sky-Watcher’s prowess and reputation for commercial mirror making is well known and one of the jewels in its crown. Sky-Watcher has demonstrated its unwavering ability to produce telescope mirrors of consistently high quality over decades. Parabolic (or Paraboloidal) mirrors are a complex shape so they need to be well made to provide the high performance expected of them. A properly figured parabolic primary mirror will eliminate spherical aberrations by bringing the light rays to the same focal point. Sky-Watcher’s diffraction-limited parabolic primary mirrors will produce sharp, contrasty images that are full of detail.

The Quattro 200P primary & secondary mirrors are made from special Low-Expansion Borosilicate glass, similar to Pyrex, which has an exceptionally low coefficient of thermal expansion compared to regular glass types such as BK7 or float glass. In practice this means a quicker cool-down time to reach thermal equilibrium, without the reliance on a cooling fan, and during the cool-down process the mirrors will maintain a better shape, reducing distortions, allowing you to start observing sooner. 

Both primary and secondary mirrors are finished with Sky-Watcher’s exquisite RAQ™ Radiant Aluminium Quartz coatings, which include layers of aluminium, dielectric tantalum pentoxide for enhanced reflectivity & durability and silicon dioxide, all combining for a brilliant, highly durable finish with 94% reflectivity that will last for years. 

The secondary mirror is held in place by four specially designed 0.5mm thin spider vane supports which are extremely rigid when tensioned. They serve to minimise obstruction to the light path, allowing the passage of more precious photons and keeping diffraction spikes to an absolute minimum. 

The colour scheme is not just an aesthetic. The OTA is tastefully finished in Sky-Watcher’s proprietary Black Diamond flecked metallic paintwork and features, by design, complementary contrasting white painted surfaces. The white surfaces are a highly practical feature for providing more visibility, which can help prevent your expensive and carefully aligned telescope from being knocked accidentally in the dark.

With a tube weight of 9kg, this OTA would be a good match for the Sky-Watcher AZ-EQ5 Pro, HEQ5 Pro, HEQ5-R Pro, EQ6-R Pro, AZ-EQ6 Pro Wave-100i or Wave-150i mountings

SPECIFICATION

  • Highest Practical Power (Potential) x410
  • Diameter of Primary Mirror 205mm
  • Telescope Focal Length 800mm (f/4)
  • 1.25” and 2” Eyepiece Adaptors supplied (no eyepieces supplied)
  • 9x50 Finderscope in centring bracket (with crosshair reticle)
  • 205mm Parabolic Primary Mirror (Low-Expansion Borosilicate Glass)
  • Secondary Mirror Diameter 70mm
  • Fully Collimatable Parabolic primary & secondary mirrors with Radiant™ Aluminum Quartz (RAQ™) coating providing 94% reflectivity with optimal durability and long-term performance
  • Large knurled Primary Mirror Cell Collimation Knobs
  • 2" (50.8mm) Dual-Speed 10:1 Linear Power Focuser 
  • 0.5mm Ultra-Thin Secondary Mirror Supports
  • Piggyback DSLR Camera Mounting Adaptor
  • Tube weight 9kg
  • 77% more Light-Gathering than 150mm