GSO Newtonian 254/1016 with Monorail Focuser
759.00
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GSO Newtonian 254/1016 with Monorail Focuser – Ref. GS-2541016MR
254 mm f/4 Newtonian with parabolic mirror and 94% reflective coating. 2" Monorail focuser. Ideal for wide-field deep sky imaging.
GSO Newtonian 254/1016 with Monorail Focuser – Ref. GS-2541016MR
Description:
The GSO 254/1016 Newtonian Monorail is a fast f/4 imaging telescope designed for amateur astronomers seeking a powerful and precise OTA for astrophotography and visual use. The 254 mm BK7 parabolic primary mirror, with a 1016 mm focal length, delivers a wide, bright field of view perfect for large nebulae and galaxies.
The optical surfaces are enhanced with 94% high-reflectivity coatings and a durable SiO₂ protective layer. The oversized secondary mirror provides full illumination for APS-C and some larger sensors.
The robust 2" Monorail Crayford focuser slides along a steel rail for superior stability under load. The 1:10 microfocusing knob ensures accurate focusing when using imaging equipment like cameras, filter wheels, and coma correctors.
The metal tube is mounted using two tube rings and a Vixen-style dovetail. It includes a finder base and is compatible with guiding accessories.
Technical specifications:
Optical design: Newtonian reflector
Aperture: 254 mm
Focal length: 1016 mm (f/4)
Primary mirror: BK7 parabolic, 94% reflectivity, SiO₂ coating
Secondary mirror: 63 mm (~25% central obstruction)
Focuser: 2" Monorail Crayford with 1:10 microfocuser
Adapter: 2" to 1.25" included
Tube: steel, length ~1120 mm
Weight: approx. 12.5 kg
Mounting: rings + Vixen-style dovetail
Included accessories: rings, dovetail bar, adapter
Additional information:
Its f/4 focal ratio makes this OTA very bright and ideal for deep-sky imaging. A coma corrector is recommended for optimal image quality. Suitable for equatorial or harmonic drive mounts with a ≥15 kg imaging payload. A solid foundation for advanced astrophotography setups.
Télescope Newtonien 254/1016
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GSO Newtonian 254/1016 with Monorail Focuser – Ref. GS-2541016MR
254 mm f/4 Newtonian with parabolic mirror and 94% reflective coating. 2" Monorail focuser. Ideal for wide-field deep sky imaging.