Takahashi Multi CA Ring 65D

Product Overview

The Multi CA Ring 65D is a camera adapter ring in Takahashi's FCT-65D conversion lens system, used to complete the mechanical connection between the FCT-65D's reducers or flatteners and a camera adapter.

Who It's For

This ring suits FCT-65D owners assembling an imaging train with the 65D FU Reducer 0.65x or the FC/FS Multi Flattener 1.04x, where the published system charts call for this ring as part of the mechanical path.

Key Features & Design

• Purpose-built for the FCT-65D system: part of Takahashi's published conversion lens chart for this telescope.
• Simple mechanical ring: no optical elements — it exists purely to complete the thread interface between adjacent parts.

Recommended Uses

Building out an FCT-65D imaging train alongside the 65D FU Reducer 0.65x or the FC/FS Multi Flattener 1.04x, where the ring is called for in Takahashi's system chart.

Compatibility and Accessory Notes

Used within the FCT-65D conversion lens system, alongside the 65D FU Reducer 0.65x and FC/FS Multi Flattener 1.04x. If you're unsure whether your specific FCT-65D imaging train needs this ring, send us your setup and we'll confirm the fit with you. See the Takahashi Back Focus Guide for spacing across the full system.

Frequently Asked Questions

Is it difficult to set up?

No — it's a simple mechanical ring that threads into place within the FCT-65D system chart alongside your reducer or flattener.

What is it best used for?

Completing the mechanical connection in an FCT-65D imaging train that uses the 65D FU Reducer or FC/FS Multi Flattener.

Does it affect the optical path?

No — it's a mechanical ring with no lens elements of its own.

What else do I need with it?

The FCT-65D reducer or flattener it's paired with, plus your camera's own adapter to complete the train — send us your setup and we'll confirm what's needed.

Bottom Line

A mechanical camera adapter ring in the FCT-65D conversion lens system, used alongside the telescope's reducers and flatteners to complete the imaging train.