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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
ZWO CAA Rotator
ZWO CAA Rotator
ZWO CAA Rotator
ZWO CAA Rotator
ZWO CAA Rotator

ZWO CAA Rotator

by ZWO
SKU ZWO-CAA-M54
$299.00 - $299.00
$299.00
$299.00 - $299.00
$299.00
Price Match Policy!
  • Motorized rotation with 0.02° step resolution
  • Adds only 16.5 mm of backfocus
  • 48 mm clear aperture for full-frame sensors
  • ASCOM and ASIAIR compatible via USB-C
  • Includes M54 and M48 camera-side adapters
2 in stock
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • ZWO CAA Camera Angle Adjuster

    The ZWO CAA Camera Angle Adjuster adds just 16.5 mm of backfocus while delivering repeatable, motorized framing with a resolution of 0.02° per step. Its 48 mm clear aperture accommodates full-frame sensors without vignetting, and the 7.5°/s rotation speed allows you to re-orient your camera 180° in under 30 seconds. Control is managed via a single USB-C cable, connecting directly to ASIAIR or ASCOM-based systems for full software integration.

    Motorized Framing with 0.02° Step Resolution

    Achieve exact composition without touching your imaging train. The ZWO CAA's motorized control eliminates the flexure and shifted alignment that occurs with manual rotators. With a step resolution of 0.02° and an overall accuracy of less than 0.1°, you can precisely align guide stars, frame complex nebulae like the Horsehead (Barnard 33) and Flame (NGC 2024) in a single shot, or set up perfect mosaic sequences in your automation software.

    16.5mm Backfocus and 48mm Full-Frame Aperture

    Engineered for modern imaging systems, the CAA inserts into your optical path with a minimal 16.5 mm profile. Its broad 48 mm clear aperture prevents vignetting on sensors up to full-frame format. The telescope side uses a standard M54 female thread, and ZWO includes both M54 and M48 male-threaded adapters for the camera side, ensuring compatibility with a wide range of filter wheels and off-axis guiders.

    • Backfocus Consideration: The 16.5 mm thickness must be accounted for in your total backfocus calculation, which may be a constraint for systems with tight tolerances, such as those using certain field flatteners or reducers.
    • Secure Connection: For tightly threaded connections, a locking slot allows you to use the included 1.5 mm hex wrench to hold the rotator stationary while attaching or removing accessories.

    ZWO CAA vs. Manual Rotators: Repeatability is Key

    While a manual rotator allows for framing adjustments, the ZWO CAA offers critical advantages for serious imagers. Its electronic control is not just about convenience; it's about absolute repeatability night after night.

    • Automated Precision: Integrated with software like N.I.N.A. or the ASIAIR, the CAA can automatically rotate to a specific angle calculated by a plate solver, a task impossible with a manual rotator.
    • Zero-Flexure Adjustments: Adjusting a manual rotator mid-session often introduces tilt or sag in the imaging train. The CAA adjusts the camera angle internally without any external force, preserving your optical alignment.
    • Remote Operation: For remote or automated observatories, motorized rotation is a necessity. The CAA provides this capability in a compact, reliable package.

    USB-C and 3.5mm Hand Controller Connectivity

    The CAA is controlled through a modern USB-C port for both power and data, simplifying cable management. It is fully supported by the ASIAIR platform and has a dedicated ASCOM driver for use with Windows-based acquisition software. For those who prefer tactile control at the telescope, a 3.5 mm jack allows you to connect an optional ZWO EAF hand controller for direct, software-free adjustments.

  • How much backfocus does the ZWO CAA add to an imaging train?

    The ZWO CAA has a body thickness of 16.5 mm, which is the amount of backfocus it will consume in your optical path. You must subtract this from your available backfocus distance.

    Can I use the ZWO CAA with a full-frame camera like the ZWO ASI6200?

    Yes. The ZWO CAA features a large 48 mm clear aperture, which is designed to pass the full light cone to a full-frame (36x24mm) sensor without introducing vignetting.

    How do I control the ZWO CAA if I'm not using an ASIAIR or computer?

    For direct, manual control without software, the ZWO CAA has a 3.5 mm input jack compatible with the ZWO EAF Hand Controller (sold separately). This allows you to rotate the camera with physical buttons while at the telescope.

    How precise is the ZWO CAA for framing a target like the Andromeda Galaxy (M31) in my ASI2600MC Pro?

    The rotator has a resolution of 0.02° per step and an accuracy of less than 0.1°. This level of precision is more than sufficient for perfectly framing large targets like the Andromeda Galaxy (M31) or creating seamless mosaics of nebular regions.

    What threads does the ZWO CAA use for connection?

    The ZWO CAA has an M54x0.75 female thread on the telescope side. It comes with two interchangeable male-threaded adapters for the camera side: one M54x0.75 and one M48x0.75.

    How fast can the ZWO CAA rotate my camera?

    The ZWO CAA has a maximum rotation speed of 7.5° per second. This allows for a full 180° rotation in under 30 seconds, making it quick to adjust your framing between targets.

  • SKU ZWO-CAA-M54
    Body Thickness (Backfocus) 16.5 mm
    Clear Aperture 48 mm
    Telescope-Side Connection M54x0.75 Female
    Camera-Side Connection M54x0.75 Male / M48x0.75 Male (with included adapters)
    Rotation Resolution 0.02° per step
    Rotation Accuracy <0.1°
    Max Rotation Speed 7.5°/s
    Data/Power Port USB-C
    Hand Controller Port 3.5 mm jack
    Software Compatibility ASIAIR, ASCOM

    • ZWO CAA Camera Angle Adjuster

      × 1

    • M54 Camera Connector

      × 1

    • M48 Camera Connector

      × 1

    • 1.5 mm Hex Wrench

      × 1

    • USB Type-C Cable

      × 1

    • Quick Start Guide

      × 1

  • ZWO 2-Year Limited Warranty