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High Point 25mm Extension Tube with M117 Threads for GSO 10" & 12" RC OTA - RC1025


High Point 25mm Extension Ring
for 10" GSO RC Astrograph

This 25mm Extension Tube is designed for the GSO 10" Ritchey-Chretien Astrograph. It is meant to be placed between the telescope and the focuser to extend back focus by 25mm. You can stack different lengths of extension rings to achieve the back focus you require for your imaging set-up. With an extension added at this location, you won't have to extend the draw tube as far, which will minimize downward tilt with heavy loads.

All High Point Extension Rings are machined of aluminum and then black-anodized.