GSO Focuser Collimation Ring / Tilt Adapter - For 6" and 8" CC / RC Telescopes with M90x1 Focuser Thread
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- GSO FF670 collimating ring for adjusting the tilt angle of the telescope focuser
- Compatible with the following GSO telescopes: RC6, CC6, RC8 and CC8
- Helps ensure sharp images across the field of view, especially for cameras with larger sensors
- Spring-loaded for easy adjustment during imaging sessions
- Easily inserted between the rear cell and the focuser while taking only 15mm of back focus
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