SImply the BEST focuser upgrade available for the GSO 6" and 8" Ritchie Chretien. 

Ready-to-go: Price includes Starlight Instruments adapter A20-271.

Features

• Designed and manufactured to the highest standard to ensure long life and no-fuss operation. 
• Two focus knobs provide coarse focus and fine focus with a reduction ratio of 10-to-1 for unrivalled accuracy and repeatability. 
• Includes Starlight Instrument's focuser brake system. 
• Non-marring brass compression ring. 
• 2.5" draw-tube travel.   

Specification

Draw Tube Travel  63.5 mm (2.5")
Lifting Capacity  8-10 pounds
Reduction Ratio  10:1
Draw Tube Drive Mechanism  Crayford
Racked In from Mounting Face  35.69 mm (1.4")
Racked Out from Mounting Face    101.73 mm (4")

There are currently no specifications available for this product.

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