Takahashi 35mm Wide Mount Camera Adapter

Product Overview

The 35mm Wide Mount Camera Adapter is Takahashi's CA35 camera ring — the piece that turns an M55.9 drawtube into a mount point for Takahashi's Wide Mount T-ring system, so a DSLR or mirrorless body can go straight onto the telescope at prime focus. One face threads onto the drawtube; the other accepts the T-ring for your camera brand.

Who It's For

This is a good match if you're connecting a DSLR or mirrorless camera through a wide T-mount to a Takahashi refractor on the M55.9 drawtube standard. Takahashi names the Sky-90 and FSQ-85EDX directly, and the same M55.9 thread also appears on the FS-78, FS-60C and FC-60E.

Key Features & Design

• M55.9 x 0.75 female, telescope side: threads directly onto the drawtube.
• M54 x 0.75 female, camera side: accepts Takahashi's Wide Mount T-ring system for DSLR and mirrorless bodies.
• Takahashi part TKA35201 (CA35): the manufacturer's own camera-adapter-ring designation.

Recommended Uses

Use it for prime-focus DSLR or mirrorless imaging through a Takahashi refractor's M55.9 drawtube, paired with the Wide Mount T-ring for your camera brand.

Compatibility and Accessory Notes

Takahashi documents this ring for the Sky-90 and FSQ-85EDX, and for the FS-78, FS-60C and FC-60E, all of which share the M55.9 x 0.75 drawtube thread. It steps that drawtube thread down to M54 x 0.75 on the camera side, where it takes the Wide Mount T-ring rather than a camera body directly — so plan on ordering the T-ring matched to your mount separately. The Takahashi Back Focus Guide is still worth checking for the back focus target on your telescope once the rest of the train is planned.

Frequently Asked Questions

Is it difficult to set up?

No — it threads onto the drawtube on one side and accepts the Wide Mount T-ring on the other, with nothing to adjust in between.

What is it best used for?

Prime-focus DSLR and mirrorless imaging through an M55.9-drawtube Takahashi refractor.

Does it come with a T-ring for my camera?

No — it's the telescope-side ring only. You'll need the Wide Mount T-ring matched to your camera mount separately.

Bottom Line

An M55.9-to-M54 camera adapter ring that puts a DSLR or mirrorless body at prime focus on Takahashi's M55.9-drawtube refractors, once paired with a Wide Mount T-ring for your camera.