Sky-Watcher 150mm Maksutov-Cassegrain Telescope OTA

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Sky-Watcher 150mm Maksutov-Cassegrain Telescope OTA
Item # SW-S11530
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  • The Sky-Watcher 150 mm Maksutov-Cassegrain Telescope is still small enough to be a portable scope while providing a generous 5.9" aperture size for bright images.
  • A long focal ratio of f/12 produces dark star backgrounds and bumps up the contrast.
  • This telescope includes a 8x50 optical finder scope, a 2" 90° Star Diagonal, and a 2" 28mm eyepiece
  • The Skywatcher 5.9" Maksutov Cassegrain is mounted on a black V-style dovetail plate, and is ready to attach to your favorite mount.


This Sky-Watcher 150 mm Maksutov-Cassegrain Telescope is a portable scope with impressive performance. You could take it along on your next trip to a star party or even on a vacation. Although this telescope is compact in size, it has the optical quality you expect from a fine Maksutov-Cassegrain OTA. 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. The aperture of this scope is 150 mm or 5.9" for extra light gathering capacity, meaning you will get brighter and sharper images.

With this 150 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. Your Star Diagonal and eyepiece never move. Speaking of the Star Diagonal, this scope includes a 2" 90° Star diagonal to make viewing more comfortable.

The Sky-Watcher 150 mm Maksutov Cassegrain Telescope also comes with a 2" 28 mm LET eyepiece. The included 8x50 finder scope makes it easy to find those celestial objects. This 150 mm (5.9") aperture Maksutov-Cassegrain telescope by Sky-Watcher provides a serious aperture for impressive bright images of celestial objects in and out of the solar system. With nearly 6" of aperture and a proven diffraction-limited Maksutov Cassegrain optical system, you will be amazed at the new celestial observations you will accomplish in no time. Begin experiencing the thrill of astronomical discovery now.

Sky-Watcher 150 mm Maksutov-Cassegrain Telescope Specifications:

  • Optical Design: Maksutov-Cassegrain
  • Aperture: 150 mm (5.9")
  • Focal Length: 1800 mm
  • Focal Ratio: f/12
  • Focal Length of Eyepiece: 28 mm
  • Finderscope: 8x50 optical finder scope
  • Diagonal: 2" 90° Star Diagonal
  • Highest Useful Magnification: 300x
  • Optical Coatings: Fully multi-coated
  • Includes a black V-style dovetail plate


Additional Information

Additional Information

SKU SW-S11530
UPC Code 50234115308
Manufacturer Sky-Watcher
Telescope Series Sky-Watcher Maksutov
Optical Design Maksutov-Cassegrain
Mount Type None - Optical Tube Only
Telescope Aperture 150mm or 5.9"
Telescope Focal Length 1800mm
Telescope Focal Ratio f/12
Highest Useful Magnification 360x
Optical Coatings Fully Multi-Coated
Dew Shield Included? No, Sold Separately
Eyepiece(s) Included 28mm 2" LET
Focuser Size 2"
Focuser Style Internal Moving Primary
Manual or Electronic Focusing? Manual
Focusing Speeds One-Speed
Tube Color or Finish Gloss Black
Finder Included 8 x 50 Optical Finder
Included Items

Included Items

  • Sky-Watcher 150 mm Maksutov Cassegrain Telescope
  • 2" 90° Star Diagonal
  • 2" 28mm LET Eyepiece
  • 8x50 Finder
  • Black Vixen-Style Dovetail Plate
Questions & Answers

Product Questions

Do you folks have any idea what the percentage the central-obstruction is in regards to the total size of the corrector-lens? 25%? 30%? Etc.
Can I use this OTA with the mount for my Nexstar SE?
What is the OTA weight?
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