Sky-Watcher 90mm Maksutov-Cassegrain Telescope OTA

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Sky-Watcher 90mm Maksutov-Cassegrain Telescope OTA
Item # SW-S11500
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  • The Sky-Watcher 90 mm Maksutov-Cassegrain Telescope is super portable yet powerful
  • It has a Maksutov-Cassegrain optical design for long a longer focal length in a compact package
  • This telescope has a long f/13.8 focal ratio for beautiful dark background skies that are similar to a classic refractor
  • Includes a red dot finder for easy object location
  • The SW 90mm Mak-Cass OTA comes with a 90-degree star diagonal and two 1.25" eyepieces
  • The OTA is mounted on a black V-style dovetail plate, ready to be connected to the mount of your choice


Sky-Watcher 90 mm Maksutov-Cassegrain Telescope

This Sky-Watcher 90 mm Maksutov-Cassegrain Telescope is the ultimate portable scope with impressive performance. You could take it anywhere. Although this telescope is small in size, it has optical quality beyond what you might expect from a smaller scope. Because it uses the diffraction-limited Maksutov optical system, it produces high resolution sharp images with high contrast. The optical elements are fully multi-coated to further enhance the image contrast.

With this 90 mm Maksutov Cassegrain Telescope by Sky-Watcher, focusing is accomplished by turning a knob on the rear housing of the scope, which moves the primary mirror slightly to adjust focus. Focusing is smooth and precise.

The Sky-Watcher 90 mm Maksutov Cassegrain Telescope comes with a 1.25" 90° Star Diagonal to make viewing more comfortable, as well as a 25mm and a 10 mm Plössl eyepiece and a Red Dot Finder to make finding celestial objects supere easy. If you are a beginner in the facinating and fun hobby of astronomy, this telescope is a good way to start enjoying impressive views of all those objects you want to see.

Sky-Watcher 90 mm Maksutov-Cassegrain Telescope Specifications:

  • Optical Design: Maksutov-Cassegrain
  • Aperture: 90 mm (3.54")
  • Focal Length: 1250 mm
  • Focal Ratio: f/13.8
  • Focal Length of Eyepiece 1: 25 mm
  • Focal Length of Eyepiece 2: 10 mm
  • Finderscope: Red Dot finder
  • Diagonal: 1.25" 90° Star Diagonal
  • Highest Useful Magnification: 180x
  • Optical Coatings: Fully multi-coated
  • Includes a black V-style dovetail plate
Additional Information

Additional Information

SKU SW-S11500
UPC Code 50234115001
Manufacturer Sky-Watcher
Telescope Series Sky-Watcher Maksutov
Optical Design Maksutov-Cassegrain
Mount Type None - Optical Tube Only
Telescope Aperture 90mm or 3.5"
Telescope Focal Length 1250mm
Telescope Focal Ratio f/13.8
Highest Useful Magnification 180x
Optical Coatings Fully Multi-Coated
Dew Shield Included? No, Sold Separately
Eyepiece(s) Included 25mm and 10mm Plossl
Focuser Size 1.25"
Focuser Style Internal Moving Primary
Manual or Electronic Focusing? Manual
Focusing Speeds One-Speed
Tube Color or Finish Gloss Black
Finder Included Red Dot Finder
Included Items

Included Items

  • Sky-Watcher 90 mm Maksutov Cassegrain Telescope
  • 1.25" 90° Star Diagonal
  • 25mm 1.25" Plossl Eyepiece
  • 10mm 1.25" Plossl Eyepiece
  • Red Dot finder
  • Black Vixen-Style Dovetail Plate
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