GSO 8 F/4 Carbon M-R&P OTA with EAF-compatible focuser (SKU: GSN600C) optical tubes OTA opinie

1060 EUR price without VAT: 862 EUR Shop online: ● not available  Shop in Warsaw (qty): ● not available  Shop in Chorzow (qty): ● not available

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The GSO 8" f/4 Carbon M-R&P OTA is a Photo-Newton telescope designed for deep-sky astrophotography, combining an 8" aperture with a fast f/4 focal ratio. This configuration allows efficient imaging of low surface brightness objects with relatively shorter exposure times, which is beneficial both for mobile setups and automated astrophotography systems. The parabolic primary mirror and a well-designed optical path ensure good compatibility with astronomical cameras.

The full-length carbon fiber tube provides high mechanical rigidity and excellent focus stability under temperature variations. Internal baffles and a rear tube mask effectively reduce stray light around the primary mirror area, improving image contrast. The optical tube is equipped with a precision rack-and-pinion focuser with microfocuser, compatible with electronic focusing systems such as the ZWO EAF and PrimaLuceLab Sesto Senso 2 and 3.

Technical specifications

• primary mirror diameter: 8" / 200 mm
• focal length: 800 mm
• focal ratio: f/4
• mirror figure: rotational paraboloid
• secondary mirror: 70 x 50 mm
• mirror reflectivity: 94%
• focuser: rack-and-pinion with microfocuser, compatible with ZWO EAF and PrimaLuceLab Sesto Senso 2 / 3
• focuser thread: M56 external, for threaded astrophotography connections
• included 2" to 1.25" eyepiece reducer with 2" filter thread
• carbon fiber tube with 235 mm diameter, with internal baffles
• rear tube mask reducing stray light from the primary mirror area
• includes tube rings and standard small Vixen-style finder shoe
• dovetail: Losmandy and Vixen
• tube length: 675 mm
• weight: 5.9 kg