Takahashi Camera Angle Adjuster (CCA-250)

Product Overview

The Camera Angle Adjuster for the CCA-250 rotates your camera to any framing angle and locks it there for the exposure, on the 98 mm clear-aperture interface that also carries Takahashi's large 645 reducer on FSQ telescopes and the CCA-250. It threads on with an M98 x 1 fitting and adds 38.5 mm of light path — a figure to build into your backfocus total.

Who It's For

This is a good match if you run a CCA-250 or an FSQ telescope with the 645 reducer system and want to rotate a large-format camera to frame a target without breaking down the imaging train to do it.

Key Features & Design

• M98 x 1 threaded fitting: the same large clear-aperture interface used by Takahashi's 645 reducer system.
• Full rotation, then lock: turn the camera to the framing you want and lock it for the exposure.
• Fixed 38.5 mm light path: a known, published figure for your backfocus total.
• 98 mm clear aperture: large enough to pass the illuminated circle from the 645 reducer without vignetting.

Recommended Uses

Framing adjustments on a CCA-250 Dall-Kirkham reflector; rotating a medium-format or full-frame camera running behind Takahashi's 645 reducer on an FSQ telescope; observatory setups reframing between multiple targets a night.

Compatibility and Accessory Notes

Threads with M98 x 1 into the CCA-250 or an FSQ telescope fitted with the 645 reducer system. Adds 38.5 mm of light path; the Takahashi Back Focus Guide lists this figure alongside every other Takahashi adapter so you can total your imaging train accurately.

Good to Know Before You Order

It adds 38.5 mm to your light path. On a spacing-critical medium-format train, that's a figure worth building into your backfocus total from the start — the Takahashi Back Focus Guide has it listed, and we're glad to help you total the rest of the train.

Frequently Asked Questions

Is it difficult to set up?

No — it threads in like any M98 adapter, and rotation is a simple loosen-turn-lock motion.

What is it best used for?

Rotating a large-format camera on a CCA-250 or an FSQ telescope running the 645 reducer system.

Does it affect my backfocus?

It adds 38.5 mm of light path, published in the Back Focus Guide alongside the rest of the Takahashi adapter range.

What size camera does it support?

Its 98 mm clear aperture is sized for the same illuminated circle as the 645 reducer system.

Bottom Line

An M98-threaded camera rotator for the CCA-250 and 645 reducer imaging trains, adding a fixed, published 38.5 mm to your light path.