ZWO
ZWO M48 Extension Ring 16.5mm
ZWO M48 Extension Ring 16.5mm
SKU:ZWO-M48-EXT16.5
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Product Description
The ZWO M48 Extension Ring 16.5mm provides precise spacing for astrophotography setups where accurate back focus is essential. With an M48 × 0.75 thread and 16.5mm optical length, it helps maintain the correct distance between your camera, filters, and other optical accessories. ZWO also lists the 16.5mm extender as part of common 55mm back-focus configurations.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ZWO |
| Product Type | Extension Ring |
| Thread Size | M48 × 0.75 |
| Optical Length | 16.5mm |
| Material | CNC-machined aluminum alloy |
| Finish | Black anodized |
| Compatibility | ZWO cameras and accessories with M48 threads |
| Main Use | Back focus adjustment |
FAQs
1. What is the ZWO M48 Extension Ring 16.5mm used for?
It is used to adjust back focus and create precise spacing between optical components.
2. What thread does this extension ring use?
It uses an M48 × 0.75 thread.
3. How long is the ZWO M48 extension ring?
The optical extension length is 16.5mm.
4. Can it help achieve 55mm back focus?
Yes. ZWO lists 16.5mm extenders in configurations designed to achieve approximately 55mm back focus, depending on the camera and other components used.
