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ZWO M54 Adapter replacing EFW

ZWO M54 Adapter replacing EFW

by ZWO
SKU ZWO-D70-M54F
$29.00 - $29.00
$29.00
$29.00 - $29.00
$29.00
Price Match Policy!
  • Replaces the ZWO EFW to achieve 55mm back focus with the OAG-L
  • Adds only 15 mm of optical length to the imaging train
  • Holds a single 2-inch mounted filter via the included M54 to M48 adapter
  • Screws directly to the camera and OAG-L and includes an M54 to M48 filter adapter
  • 70 mm diameter body matches ZWO cooled cameras
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • ZWO M54 ASI Cooled Camera Adapter for OAG-L - 70 mm Diameter

    The ZWO M54 ASI Cooled Camera Adapter is the definitive solution for integrating the ZWO OAG-L into your imaging train without a filter wheel, adding just 15 mm of optical path to achieve a precise 55mm back focus. This 70 mm diameter adapter screws directly to your ZWO cooled camera and includes an M54 to M48 adapter that holds a 2-inch filter. It can also hold a single 2-inch filter, threaded into the included M54 to M48 adapter, for streamlined one-shot-color imaging.

    Achieve 55mm Back Focus with the OAG-L

    This adapter solves a common spacing challenge for astrophotographers using the ZWO OAG-L. Instead of coupling the OAG-L with a 20 mm thick electronic filter wheel (EFW), this adapter, together with a 5 mm sensor tilt adapter, provides the correct spacing needed to hit the standard 55 mm back focus required by most field flatteners and coma correctors. It creates a lighter, simpler, and more rigid connection for imagers who don't need the complexity of a full filter wheel, particularly those using one-shot-color (OSC) cameras.

    Integrated Holder for a Single 2-inch Filter

    More than just a spacer, this adapter holds a single 2-inch mounted filter, threaded into the included M54 to M48 adapter. This is the ideal setup for OSC imagers who need to use one primary filter (such as a UV/IR Cut, a dual-band, or a light pollution filter) without the weight, cost, and power requirements of an EFW. The adapter securely holds the filter in the light path, maintaining rigidity and preventing tilt.

    Rigid 70mm Body with M54 and M48 Threads

    Engineered for a perfect fit, the adapter's 70 mm diameter body matches the profile of ZWO's cooled cameras, ensuring a solid, seamless connection. It attaches to the camera and to the OAG-L with the included L8 screws, four on each side. ZWO also includes an M54 male to M48 female adapter: the 2-inch filter threads into it, and this filter unit then fixes into the M54 adapter.

  • How does the ZWO D70-M54F adapter help achieve 55mm back focus?

    This adapter is designed to be used with the ZWO OAG-L. It has an optical path of 15 mm. When combined with the OAG-L, a 5 mm sensor tilt adapter and a ZWO cooled camera's native back focus, it correctly sets the total distance to the 55 mm required by most telescope correctors. It effectively replaces the 20 mm ZWO EFW in the imaging train for setups that do not require a filter wheel.

    Can I use filters with this ZWO M54 adapter?

    Yes. The adapter holds one standard 2-inch mounted filter, threaded into the included M54 to M48 adapter. This is perfect for using a single light pollution, narrowband, or UV/IR cut filter with a one-shot-color camera.

    Why would I use the ZWO D70-M54F adapter instead of a ZWO EFW?

    This adapter is for imagers who want a simpler, lighter, and more rigid setup. If you use a one-shot-color camera and only need a single filter, this adapter provides the correct spacing for the OAG-L without the cost, weight, and complexity of a full electronic filter wheel (EFW).

    I have a ZWO ASI2600MC camera and an OAG-L. Will this adapter work with my setup?

    Yes, this is the exact component designed for that scenario. The 70 mm body of the ZWO D70-M54F adapter matches the ASI2600MC, and with a 5 mm sensor tilt adapter its 15 mm spacing achieves 55 mm back focus when used between the OAG-L and the camera.

    What is the purpose of the included M54 to M48 adapter?

    It holds the 2-inch filter. Per ZWO's connection guide, you thread the filter into the M54 male to M48 female adapter and then fix this filter unit into the M54 adapter, between the camera and the OAG-L.

    Will this ZWO adapter work with non-ZWO 2-inch filters?

    Yes, it is designed to be compatible with standard 2-inch mounted filters from most manufacturers. As long as the filter cell meets the standard M48x0.75 thread and height specifications, it should fit correctly inside the adapter.

  • SKU ZWO-D70-M54F
    Optical Length 15 mm
    Outer Diameter 70 mm
    Connection (Camera Side) Screw mount to camera (4 screws)
    Connection (Telescope Side) Screw mount to OAG-L (4 screws)
    Filter Compatibility 1x 2-inch Mounted Filter (M48x0.75)
    Kind Spacer replacing the 20 mm EFW (with OAG-L)

    • ZWO 70 mm M54 ASI Cooled Camera Adapter for OAG-L

      × 1

    • M54 Male to M48 Female Adapter

      × 1

    • L8 Screws

      × 8

  • ZWO 2-Year Warranty