iOptron Adapter iAFS3 / GSO Newton 3″: telescope adapter for the iAFS3
With this aluminum adapter, you can mount the iOptron iAFS3 automatic focus system on GSO 10″ and 12″ Newton telescopes with a 3″ focus connection. The adapter forms the fixed, backlash-free transition between the telescope and the focus system.
A rigid coupling is essential for an autofocusser: any play translates into focus shift as soon as the tube changes position.



Light, stiff and ready to mount
Aluminum is lightweight and dimensionally stable: the adapter adds virtually no weight to the rear of the tube and keeps the focuser perfectly aligned with the optical axis. Installation is simply screwing it on; no modifications to the telescope are necessary.
Included
- Aluminum adapter
Featured accessories
No focuser yet? The iAFS3 is the matching automatic focuser.
For whom yes and for whom no
- ✓ Owners of GSO 10″ and 12″ Newtons with a 3″ focus connection who want to mount the iAFS3
- ✗ Other telescopes: choose the adapter that fits your connection
Specifications
| Suitable for | GSO 10″ and 12″ Newton with 3″ focus connection |
| For focuser | iOptron iAFS3 |
| Material | Aluminum |
You can find more mounts and accessories for this brand at the iOptron brand page.




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