HantsAstro Classes


Sky-Watcher Explorer 150P f5 Newtonian

moon phase


Sky-Watcher Explorer 150P Reflector

Magnifications (with eyepieces supplied): x30 & x75
Highest Practical Power (Potential): x300
Diameter of Primary Mirror: 150mm
Telescope Focal Length: 750mm (f/5)
Eyepieces Supplied (1.25"): 10mm & 25mm
Parabolic Primary Mirror
0.5mm Ultra-Thin Secondary Mirror Supports
6x30 Finderscope
Direct SLR Camera Connection
EQ3-2 Deluxe Equatorial Mount
Built-in Polar Alignment Scope Holder
Aluminium Tripod with Accessory Tray
33% more Light Gathering than the 130mm

The Explorer 150/750 Newtonian reflector is a step up from the 130 mm version and is classed as an F5 scope. With 150 mm aperture. It has 33% more light gathering than the 130 mm and being a faster telescope is more suitable deep sky objects. These also comes supplied with a much sturdier EQ3-2 tripod mount, which helps when pushing it to higher magnifications. Like the 130. It is possible to do some basic astrophotography with these telescopes. For someone beginning in astronomy, any of the skywatchers we have would be suitable for starting out with.

Newtonians (also known as catoptrics) usually use a concave parabolic primary mirror to collect and focus incoming light onto a flat secondary (diagonal) mirror that in turn reflects the image out of an opening at the side of the main tube and into the eyepiece. The basic design has been around for hundreds of years and invented by, you guessed it Sir Isaac Newton in 1689.

A bit like the picture above his one was a 150mm diameter and used his discovery of Newton's Rings to grind and check that the mirrors flat.



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