GSO Newton 150/750 (GSN150)

GSO Newton 150/750 (GSN150)

Overview

The GSO Newton 150/750 (GSN150) is a portable and capable Newtonian telescope, well-suited for amateur astronomers looking for a solid entry-level instrument. With a 150 mm parabolic BK7 primary mirror and a fast f/5 focal ratio, it provides bright, contrast-rich views of both deep-sky objects and planets.

Its compact size and low weight make it an ideal travel scope or a reliable tool for mobile observers. It can also serve as a beginner-friendly astrograph when paired with the appropriate corrector.

Technical specifications

• Optical design: Newtonian reflector

• Aperture: 150 mm

• Focal length: 750 mm (f/5)

• Primary mirror: BK7 parabolic, 94% reflectivity

• Secondary mirror: 47 mm diameter

• Central obstruction: 31.3%

• Focuser: 2" Crayford with 1:10 micro reduction + 1.25" adapter

• Finder: 8x50 straight-through

• Tube: steel, approx. 670 mm long, 180 mm diameter

• Tube weight: ~5.2 kg

• Included accessories: tube rings with Vixen-style dovetail, 35 mm extension, dust caps

Mounting and use

Thanks to its light weight and short tube, the GSO 150/750 can be paired with many small to mid-range equatorial mounts. It is especially suitable for modern portable systems, including belt-driven and harmonic drive mounts from brands like iOptron.

Highlights

• Compact Newtonian with excellent optics

• Reliable 2" Crayford focuser with fine tuning

• Ready for visual observing and light imaging

• Easily transportable and adaptable

• Good optical base for educational or field use