Starizona Variable M48 Adapter 15-20mm
- Adjustable Length: 15mm to 20mm
- Thread Type: M48
- Fine-Tune Back Focus Spacing
Check which filter and adapter sizes clear the sensor with the Starizona Variable M48 Adapter 15-20mm, and how much light the corners lose.
Check vignettingAn adjustable length of 15mm to 20mm allows you to dial in the precise back focus required by your flattener or reducer using the Starizona Variable M48 T-Threaded Adapter. This simple, robust component is essential for bridging non-standard gaps in your imaging train and achieving a perfectly flat field with sharp stars from corner to corner.
Correct back focus is not optional—it's the difference between sharp stars edge-to-edge and a compromised image. This adapter provides 5mm of fine adjustment, from a minimum length of 15mm to a maximum of 20mm. This range is ideal for closing small, specific gaps in an M48-threaded imaging train, ensuring your sensor is positioned at the precise focal plane dictated by your flattener or reducer. For larger spacing requirements, Starizona also offers 20-30mm and 30-40mm versions.
This version of the Starizona Variable M48 Adapter is continuously adjustable from a minimum length of 15mm to a maximum of 20mm, providing a total adjustment travel of 5mm.
The adapter uses standard M48 threads (male on one side, female on the other). This is the common standard for accessories that connect to 2" nosepieces, field flatteners, and many large-format cameras.
If your imaging train requires more than 20mm of extension, Starizona offers other versions of this adapter to cover larger gaps. You can choose from a 20-30mm model or a 30-40mm model to meet your specific spacing needs.
| Thread Type | M48 |
| Adjustable Length Range | 15mm - 20mm |