Helical focuser with collimation flange. The system is chosen to minimize the shadow spot on the main mirror of the 500mm astrograph when working at prime focus. The design is reinforced with several guides that align the movement when rotating the focuser ring. Nearby is a QHY 163 camera for scale.
Resolution: 1600x1200 px
Scale: 648 KB
Thank you for sharing your photos - this is exactly what this project is all about! :-)
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