M54 adapter for OAG-L and ASI DSO Cameras Holder ring back focus length will be

back focus length will be only 6

Note: focusing tolerance ±0

Nikon lens

Fine-optically polished to ensure accurate 1/4 wavefront over the both surfaces

M54 adapter for OAG-L and ASI DSO Cameras Holder ring back focus length will beThe ZWO M54 adapter is an adapter designed specifically for ASI cooled cameras. Instead of using the 20mm ZWO EFW, you can directly connect the adapter to OAG L with the addition of 5mm sensor tilt adapter to reach 55mm back focus. It has a thickness of 15mm. You can also insert an ZWO 2filter into it. The adapter supports 2 filters from third party. Below are the requirements for the filters. Mechanical Diagram What is in the box? M54 adapter (15mm)