CDK12.5 to IRF90 Rotating-Focuser Adapter

• The IRF90 is a large capacity Integrated Focuser and Rotator for use with Alt/Az, or equatorially mounted systems.
• Occupies 3.5″ of backfocus with the focuser fully racked in, and 4.7″ when fully racked out.
• The Focuser is capable of lifting 40 lbs (18 kg) with a range of 30mm (30000 microns/1.2″).
• The Rotator has a 90mm aperture with a range of 365 degrees with hard stops to eliminate any chance of cord wrap.
• IRF90 is controlled via PWI4 software for autofocusing and optional field de-rotation (if using an Alt/Az mounted system).

The CDK12.5 from PlaneWave Instruments represents a fusion of precise engineering and innovative design tailored for the avid astrophotographer and the discerning astronomer. With its advanced technology and refined design, the CDK12.5 delivers exceptional image quality for a range of observational and scientific applications.

*Price excludes shipping and crating. See our crating and pricing policy for full details.

Key Features Overview

The CDK12.5 stands out with its notable specifications and features:

• 12.5-inch (318 mm) aperture
• 2541 mm focal length
• f/8 focal ratio
• 265 mm back focus from mounting surface
• Perfectly flat field across the entire 52 mm image circle
• No off-axis coma or astigmatism
• Rock-solid fused silica mirrors with low thermal expansion
• Lightweight and rigid carbon fiber optical tube assembly