Skip to content
June 24th: Store is closed for Quebec National Holiday. Orders placed that day will ship on June 25th.
June 24th: Store is closed for Quebec National Holiday. Orders placed that day will ship on June 25th.
ZWO 90mm Holder Ring

ZWO 90mm Holder Ring

by ZWO
SKU ZWO-RINGD90
$59.00 - $59.00
$59.00
$59.00 - $59.00
$59.00
Price Match Policy!
  • Engineered for a precise 90 mm camera body diameter
  • Official fit for ZWO ASI2600 and ASI6200 Pro Cooled Cameras
  • Features a single, oversized M6 locking thumbscrew for fast, secure clamping
  • Provides a stable mounting base for tripods and dovetail plates
3 in stock
Worldwide Shipping
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • ZWO 90 mm Holder Ring for ASI Pro Cooled Cameras

    The ZWO 90 mm Holder Ring provides a precise, secure mounting solution for ZWO cameras with a 90 mm body diameter, including the popular ASI2600 and ASI6200 Pro series. Operation relies on a single, oversized M6 thumbscrew, allowing you to quickly lock down your camera's position without needing tools in the dark.

    Secure 90 mm Fit for ASI2600 & ASI6200 Cameras

    This holder ring is purpose-built for the 90 mm diameter of ZWO's larger-format cooled cameras like the ASI2600 and ASI6200. The exact-fit design ensures a firm, no-slip grip around the camera body, delivering a more stable imaging platform than a single tripod-screw connection and reducing the risk of flexure or rotation during a long imaging session.

    Rapid M6 Thumbscrew Locking

    Field setup is simplified with a single, large M6 thumbscrew that controls the clamping mechanism. This design choice means you can mount or reposition your camera quickly and confidently, even while wearing gloves. There are no small Allen keys to drop or lose in the dark; just a simple, robust locking point.

    Choosing the Right ZWO Ring: 90 mm vs. 78 mm vs. 86 mm

    Selecting the correct holder ring is critical for a secure fit. ZWO produces several sizes for its camera lineup, and they are not interchangeable. This 90 mm model is specifically for their latest generation of large-sensor cameras; check your camera model against the list below before purchasing.

    • 90 mm Holder Ring (This Model): Correct for the ZWO ASI2600 and ASI6200 series cameras.
    • 86 mm Holder Ring: Required for larger body cameras such as the ASI094, ASI128, and ASI071 Pro.
    • 78 mm Holder Ring: Fits the mid-size ZWO cooled cameras, including the ASI1600, ASI183, and ASI294 Pro.

  • Which cameras are compatible with the ZWO 90 mm Holder Ring?

    This ring is designed exclusively for ZWO cameras with a 90 mm body diameter. This includes the ZWO ASI2600MM Pro, ASI2600MC Pro, ASI6200MM Pro, and ASI6200MC Pro.

    Will the ZWO 90 mm Holder Ring fit my ASI1600MM Pro camera?

    No. The ASI1600 Pro has a smaller body diameter and requires the ZWO D78 Holder Ring for a proper fit. Using the 90 mm ring would result in a loose, insecure connection.

    How do I attach the ZWO 90 mm Holder Ring to a dovetail bar?

    The base of the holder ring typically has one or more standard 1/4"-20 threaded holes. You can use a 1/4"-20 screw to bolt the ring directly to a Vixen or Losmandy style dovetail bar, which then slides into your telescope mount's saddle.

    Can I use the ZWO 90 mm Holder Ring to mount my ASI6200MC Pro and a camera lens for wide-field astrophotography?

    Yes, this is an ideal application. By attaching the 90 mm ring to a tripod or a small dovetail bar on a star tracker, you create a very stable platform for wide-field imaging with camera lenses. It supports the weight of the camera body directly, reducing strain on the lens mount.

    For my ASI2600MM Pro, is this 90 mm ring more stable than just using the camera's built-in 1/4"-20 hole?

    Absolutely. A single screw can act as a pivot point, allowing the camera to rotate slightly if bumped or as cables pull on it. The ZWO 90 mm Holder Ring clamps around the entire camera body, preventing any rotation and providing a much wider, more stable connection to your mount for improved tracking and stability.

    What tools are required to use the ZWO 90 mm Holder Ring?

    No tools are needed to secure the camera inside the ring itself. The large M6 thumbscrew is designed to be tightened by hand. You will only need a screwdriver or Allen key to attach the base of the ring to your dovetail plate or tripod.

  • SKU ZWO-RINGD-90
    Warranty ZWO - 2 Years

    • ZWO 90 mm ASI Cooled Camera Holder Ring

      × 1

  • ZWO 2-Year Manufacturer Warranty