iOptron iEFW Electronic Filter Wheel 5x 1.25 inch: electronic filter wheel for five filters
With the iEFW, you can change filters in seconds, manually or via the software, without touching the camera's lens. This keeps the camera exactly in place and prevents focus loss or distorted image distortion during an LRGB or narrowband session.
The wheel accommodates five filters: 1.25 inch with a cap or 31 mm without a cap. Just enough for LRGB plus one narrowband filter, or an H-alpha/OIII/SII set with luminance.




Compact in the photo train
The flat design keeps the photo train short and balanced. The included T2 adapters connect the wheel to the camera and telescope or focus; the USB-C connection connects to the laptop for automatic changes in your recording software.
Included
- iEFW filter wheel
- T2 adapters
- USB-C cable
Featured accessories
Fill the wheel with the iOptron LRGB filter set as a starting point for color shots with a monochrome camera.
For whom yes and for whom no
- ✓ Monochrome photographers who want to replace LRGB or narrowband sets with hand-made ones
- ✗ Color camera users: they usually have enough with just one filter
Specifications
| Positions | 5 |
| Filter format | 1.25″ mounted or 31 mm unmounted |
| Operation | Motorized, via software or manually |
| Connection | USB-C, T2 adapters included |
You can find more mounts and accessories for this brand at the iOptron brand page.





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