Sky-Watcher Evostar 100 ED DS-PRO OTA With Focal Reducer Corrector

10203 20235

New product

The new EVOSTAR DS-PRO Series ED Apochromatic refractors in their stunning Black-Diamond livery, house premium optics of the same quality and performance level as our now legendary Equinox series, making them superb instruments for both imaging and visual observations.

With Focal Reducer Corrector

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Delivery In 1-5 Days*

£ 849.00 Tax included

1-5 Days UK Delivery*

Data sheet

Optical Design Refractor
Aperture 4 inch
Focal Length 900 mm
Focal Ratio F9
Finderscope 9x50
Optical Coatings Fully Multi Coated
Magnification 32x
Warranty One Year

More info

Apochromatic Refractors, due to their unobstructed, text-book like diffraction patterns, produce the sharpest, highest quality optical imaging available, bar-none, aperture for aperture, of any telescope optical system.

These high-end telescopes all feature a doublet objective lens. One element is made from premium Japanese Ohara FPL-53 Extra-Low Dispersion (ED) glass, which virtually eliminates chromatic aberration to deliver true colour reproduction. Top quality Schott glass is utilized for the Crown element.

Each air-to-glass lens surface has exotic anti-reflection metallic coatings applied, to ensure optimum light through-put of approaching 99.5%!!

The proprietary Sky-Watcher “Metallic High-Transmission Coatings” (MHC) are the finest photon anti-rejection coatings in their class.

The schott logo

  • Magnification with Eyepieces Supplied: x32 
  • Highest Practical Power (Potential): x300 
  • Objective Lens Diameter: 100mm 
  • Telescope Focal Length: 900mm (f/9) 
  • 0.85x Focal Reducer/Corrector (provides f/7.65)
  • Eyepiece Supplied (2"): 28mm LET 
  • 2”/50.8mm Di-Electric Star Diagonal 
  • 9x50 Finderscope 
  • Dual-Speed 11:1 2” Crayford Focuser (Backlash-Free) 
  • Multi-Coated Objective Lens 
  • Supplied with Tube Rings & Mounting Plate 
  • Aluminium Carrying Case

0.85x Focal Reducer/Corrector

Designed for serious Astro-Imagers. Optimised for the Evostar-100ED PRO, this superb quality accessory effectively reduces the telescope’s focal length by a factor of 0.85x and provides much improved field-edge correction. Use in conjunction with Sky-watcher’s M48 Canon or Nikon T-ring adaptors (product codes 20237 & 20238).


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