Takahashi Prime-Focus Ring 89 mm (TKA86002)

Takahashi Prime-Focus Ring 89 mm (TKA86002)

This substantial 89 mm prime-focus ring is more than a length of barrel—it’s the keystone in achieving full-frame imaging with telescopes like the CCA-250 or FSQ-106ED. Its wide bore accepts camera nosepieces and anti-backlash mechanisms, while the finely threaded ends and satin-black finish guarantee an elegant, firm coupling.

Whether you’re mounting a cooled CCD or deep-sky camera, the TKA86002 provides the rigidity needed to maintain focus and alignment through long exposures. It anchors the train, keeping your sensor and reducer in perfect register when used prime-focus or with a reducer/corrector.

Cloudy Nights Community Insight:
Users integrating the CCA-250 or FSQ-106 with full-frame sensors call this ring “the foundation of a solid imaging train”—noting that without it, performance and mechanical composure suffer under load.

Observing Tip:
Install this ring early in your imaging assembly—position it between flattener/reducer and rotator/adapters to centralize weight and prevent front-heavy sag, especially during long sessions.