ZWO EFW 8×1.25" Filter Wheel
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Vai al moduloThe ZWO EFW 8×1.25" (Electronic Filter Wheel) is the highest-capacity filter wheel for 1.25" filters in ZWO's EFW series. With 8 slots for 1.25" filters or unmounted 31 mm filters, it allows loading the entire LRGB and narrowband sequence (Ha, SII, OIII) plus an extra slot — for a dark frame filter or broadband — in a single configuration, without touching the optics during the night. Powered directly via the built-in USB-C hub of the ASI camera.
8 positions: maximum capacity in the 1.25" class
With 8 slots, LRGB (4 filters), Ha, SII, OIII and one additional filter can all be loaded at once. The stepper motor reaches each position repeatably and silently. Filters sit only 10 mm from the sensor — no vignetting risk.
T2 connection and native ASIAIR integration
Both connections are T2 (M42×0.75). Integrates natively with ASIAIR Mini, ASIAIR Plus and ASIAIR Pro. Optical length: 20 mm. T2 adapter included.
CNC aluminium, compact and lightweight
Despite 8 positions, only 530 g — ideal for travel setups and compact mounts. Power draw 120 mA via USB-C.
Technical specifications
| Filter positions | 8 |
|---|---|
| Filter format | 1.25" / 31 mm unmounted |
| Telescope-side connection | T2 (M42×0.75) |
| Camera-side connection | T2 (M42×0.75) |
| Optical length | 20 mm |
| Filter-to-sensor distance | 10 mm |
| Power supply | USB-C (ASI camera hub) |
| Power consumption | 120 mA |
| Motor type | Stepper motor |
| Material | Aluminium |
| Weight | 530 g |
| Manufacturer | ZWO (Suzhou ZWO Co., Ltd.) |