Takahashi RD‑EXT 98 mm – 33.2 mm Extension (TKA86205)

Takahashi RD‑EXT 98 mm – 33.2 mm Extension (TKA86205)

This 33.2 mm extension sleeve continues Takahashi’s commitment to mechanical integrity and imaging precision. Designed for 98 mm front-diameter optical systems, it adds the critical space needed to clear reducer optics and accessories, especially when combining with filter wheels or rotators.

Its satin-black finish and knurled handling ring blend seamlessly with Takahashi components, while the internal threading remains true and parallel. It occupies a strategic position in the train, enabling proper convergence of optical elements.

Cloudy Nights Community Insight:
Owners using 98 mm-based imaging chains credit this extension with finally letting their assemblies “reach infinity focus with the flattener and filters installed.” It fills a consistent gap in many setups.

Observing Tip:
Insert this extension between reducer/flattener and the rest of the train—doing so stabilizes the focal region, keeps the drawtube centered, and prevents nightly drift.