iOptron iEAF — electronic automatic focuser for existing focusers The iOptron iEAF (#8453) is a compact motor unit that attaches to your telescope's existing Crayford or rack-and-pinion focuser and drives its focus shaft, adding computer-controlled and automatic focusing without replacing the focuser.
Manufacturer model: iOptron iEAF (#8453) · Specifications checked against manufacturer data on 2026-11-03
The iOptron iEAF (#8453) is a compact motor unit that attaches to your telescope's existing Crayford or rack-and-pinion focuser and drives its focus shaft, adding computer-controlled and automatic focusing without replacing the focuser.
The iEAF is powered and controlled over a single USB 2.0 connection at 5 V, with no separate power supply needed. It supports ASCOM for use with common imaging and autofocus software. iOptron rates it for payloads up to 5 kg, with a maximum speed of 3 rpm.
| Manufacturer part number | 8453 |
|---|---|
| Compatible focusers | Crayford and rack-and-pinion, with suitable installation |
| Maximum payload | 5 kg |
| Maximum speed | 3 rpm |
| Power | 5 V via USB |
| Interface | USB 2.0 |
| Software | ASCOM |
| Dimensions | 51 × 61 × 41 mm |
| Weight | 254 g (focuser only) |
Add-on motor for existing Crayford/R&P focusers. Shaft coupler and bracket fit depend on telescope focuser; check iOptron bracket list before sale.
| Max payload (kg) | 5 |
|---|---|
| Max speed RPM | 3 |
Data sheet
Specific References
iOptron iEAF — electronic automatic focuser for existing focusers The iOptron iEAF (#8453) is a compact motor unit that attaches to your telescope's existing Crayford or rack-and-pinion focuser and drives its focus shaft, adding computer-controlled and automatic focusing without replacing the focuser.
Manufacturer model: iOptron iEAF (#8453) · Specifications checked against manufacturer data on 2026-11-03
