Sky-Watcher Explorer 150PDS OTA
  • Sky-Watcher Explorer 150PDS OTA

Sky-Watcher Explorer 150PDS

The Sky-Watcher EXPLORER-150PDS Newtonian Reflector incorporates a Dual-Speed 10:1 ratio focuser for excellent focusing precision

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150mm (6”) f/5 Parabolic Dual-Speed Newtonian Reflector OTA

Skywatcher supplied product information -  


Also the tube length has been slightly shortened to optimise performance for prime-focus photography. Even better performance for astro-photography and visual use can be achieved when used in combination with Sky-Watcher’s Newtonian coma corrector (Prod.Code 20233). 

Standard Specification:

  • Magnification (with eyepiece supplied) x30

  • Highest Practical Power (Potential) x300

  • Diameter of Primary Mirror 150mm

  • Telescope Focal Length 750mm (f/5)

  • Eyepiece Supplied 25mm (1.25"/31.7mm)

  • 6x30 Finderscope

  • Parabolic Primary Mirror

  • 2" (50.8mm) Dual-Speed 10:1 Crayford Focuser

  • 0.5mm Ultra-Thin Secondary Mirror Supports

  • 33% more Light-Gathering than 130mm

Our view   

An economical way of starting out in astrophotography. A 150mm f/5 Newtonian with a dual speed focuser. Use a coma corrector for removing off-axis coma from wide-field images.


Ignore the ‘shortened tube’ bit mentioned above. We want to increase tube length a little at the top of the tube by adding a matt black dewshield of about 250mm long. This will help cool the tube quicker by helping to draw cool air up past the primary mirror, and also provide a better baffle for the secondary against contrast-reducing stray light.


Data sheet

Optical Design
6 inch
Focal Length
750 mm
Focal Ratio

Specific References