ZWO Adapter D70-M54F

ZWO Adapter D70-M54F is a precision adapter for astrophotographers who want to use the ZWO OAG-L without an electronic filter wheel (EFW). This adapter ensures that the optical distance remains correct – exactly 55 mm – when using a cooled ZWO camera.

The adapter mounts directly to the OAG-L via the M54 female thread and seamlessly connects to full-frame or APS-C ZWO cameras. Thanks to its compact design of only 15 mm height, you maintain maximum flexibility in your optical path, and the integrated filter thread allows you to screw 2″ filters directly into the adapter.

✓ Specially designed for ZWO OAG-L without EFW
✓ Ensures exact 55 mm backfocus with cooled ZWO cameras
✓ Includes M54 filter thread for 2″ filters
✓ Only 15 mm thick – ideal for compact optical trains
✓ Solid aluminum construction with 70 mm outer diameter

Application

This adapter is ideal for users of:

• ZWO OAG-L without filter wheel
• Cooled ZWO cameras (full-frame or APS-C)
• Astrophotography setups where precise backfocus is essential
• Telescope systems with M48/M54 output and OAG integration

Optical path example:
Telescope – ZWO tilt adapter – ZWO OAG-L – ZWO Adapter D70-M54F – Cooled ZWO camera

Specifications

• Height: 15 mm
• Outer diameter: 70 mm
• Filter thread: Yes (for 2″ filters, M48)
• Compatibility: OAG-L, ZWO ASI camera system
• Material: Anodized aluminum