Sky-Watcher Explorer 150PDS OTA
The new Sky-Watcher EXPLORER-150PDS Newtonian Reflector incorporates the same superb mirror-set as the Explorer-150P Black Diamond Series, but with two significant advantages. A Dual-Speed 10:1 ratio focuser is now included for excellent focusing precision.
150mm (6”) f/5 Parabolic Dual-Speed Newtonian Reflector OTA
Skywatcher supplied product information -
OPTIMISED FOR PRIME FOCUS ASTRO-PHOTOGRAPHY
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).
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)
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
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.
- Optical Design
- 6 inch
- Focal Length
- 750 mm
- Focal Ratio