ZWO CAA - Camera Angle Adjuster - Electronic Field Rotator

The CAA from ZWO is here! CAA stands for camera angle adjuster, otherwise known as an electronic rotator. This helpful tool allows you to orient your astrophotography camera into any composition you want! It's the perfect tool for astrophotographers who are looking for high precision & repeatable camera orientations every clear night.

ZWO CAA Features Overview

Designed for Use with the ASIAIR

ZWO has made controlling the CAA a breeze in the ASIAIR app, making it the perfect choice for ASIAIR users. You may also control the CAA using the ASIStudio desktop app or even use it with ASCOM driven software like NINA.

Automatically Recall Previous Camera Rotations

Astrophotographers know how frustrating it can be to lose the rotation of a project you're working on. The CAA allows anyone to precisely frame the perfect astrophotography composition and repeat it night after night.

That's right — when paired with the ZWO ASIAIR, the CAA allows you to automatically recall previous camera orientations with ease. It will determine the camera's orientation based on plate solving of past images, and then the CAA will rotate your image train to match it within 0.1 degrees. This means you can easily image multiple targets per night at different rotations and easily swap back and forth!

Compact & Lightweight Design

The CAA weighs a mere 465g, which keeps the total weight of your image train down. The body dimensions measure just 136 x 102 x 16.5mm, making the rotator small enough to fit on nearly any telescope setup!

Ultra-Precise Positioning

The ZWO Camera Angle Adjuster features 0.02° / step resolution, allowing you to achieve an incredible positioning accuracy of under 0.1°. This allows you to easily repeat previous rotations, letting you get more keepable data night after night!

High Speed Rotation

The CAA can rotate at a speedy 7.5° per second, meaning it can do a full 360° rotation in well under a minute! Thanks to this fast rotation speed, you can find your target and be imaging with your planned composition in minutes.

Easy Cable Management

With just one USB-C cable needed to send commands and power the CAA, you can streamline cable management and reduce the risk of cable snags.

ZWO CAA Ports & Connections

The CAA features two ports: a USB-C port for power supply and data transmission, plus a hand controller port for connecting the EAF hand controller (sold separately), which lets you rotate the CAA manually when not connected to the ASIAIR or a computer.

Connection

With ZWO FF and Askar series refractors, with or without the reducer, you can use the standard adapters (M48) supplied with the telescope and your ZWO camera, replacing the 16.5mm adapter with the CAA. If you have a DUO or 2600AIR camera and wish to use M54, an optional adapter is available as an accessory.

Connection diagrams for optical systems with 55mm back focus distance:

Installation Steps

1. Install the CAA on the threaded drawer tube adapters.
2. Install the optional M54 (21mm) adapter to maintain the focusing distance.
3. Install your camera. If you use a camera with an M48 interface, you can change the ZWO CAA camera threads from M54 to M48 using the supplied accessory plate.

Structural Dimensions

ZWO CAA Specifications

• Telescope Side Connection Thread: M54F
• Camera Side Connection Thread: M54M / M48M (both included)
• Weight Capacity: Up to 4 kg
• Torque Capacity: More than 15 centiNewtons per meter
• Resolution: 0.02° / step
• Positioning Accuracy: Less than 0.1 degrees
• Aperture: Ф48mm
• Thickness: 16.5mm (back focus consumption)
• Weight: 465 g
• Rotation Speed: 7.5 degrees per second
• Ports: USB Type-C, Hand Controller (for manual operation, sold separately)
• Power: USB Type-C
• Software Supported: ASIAIR, ASIStudio, ASCOM

What's in the Box

• ZWO CAA body
• M54 camera connector (comes pre-installed)
• M48 camera connector
• USB-C cable
• 1.5mm hex wrench
• Quick start guide