astro.n-minus

OTA

GSO 6" F/9 RC

Key specifications

Aperture153 mm
Focal length1377 mm
Focal ratiof/9
Optical designRitchey-Chrétien
Back focus285 mm

All specifications

Focuser type2" dual-speed Crayford
DovetailVixen

About

A 153 mm f/9 Ritchey-Chrétien in a steel tube with hyperbolic low-expansion quartz mirrors and a 2" dual-speed Crayford focuser (EAF compatible), for lunar, planetary and long-exposure imaging.

Where to buy

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