ZWO EFW 8x31 (8 x 1.25″ or 31mm)

The EFW 8x31 handles 8x1,25" or 31mm (unmounted) filters. Weights 400g only. Thickness is 20 mm.

Only one USB Cable is enough to power up the EFW, the max power consumption is around 120mA@5V, so you can powered it through the USB port. 

The Electronic Filter wheel can be rotated in both counter clockwise or clockwise direction for filter selection.

The distance between the filter and sensor is only around 10mm when you connect it to ASI1600. So 1.25″ filters won’t have vignetting up to F5 focal ratio scope and 31mm filter won’t have vignetting up to F2 lens

The full EFW Set includes:
- 8*31mm or 7*36mm EFW body, T2 nosepiece, 1.25″ Holder-T2, T2-T2, USB2.0 Cable
- 1.25″ filter requires: threads length shorter than 3mm, height without threads less than 7mm
- 31mm filter requires: a set of M42 screws and washers needed to fix the filters are included in the package .

Software:
you just need to plugin the EFW with USB2.0 cable and install the   ASCOM driver . There are  ZWO Filter Wheel(1) and ZWO Filter Wheel(2) to select. Yyou can use either one of them. There are 2 ASCOM is for controling 2 EFW in one software.

The EFW mini is the smallest and most lightweight 1.25″ Electronic Filter Wheel in the world! Handles 5x1,25" or 31mm (unmounted) filters. Weights 300g only. Thickness is 20 mm.

Only one USB Cable is enough to power up the EFW, the max power consumption is around 120mA@5V, so you can powered it through the USB port. 

The Electronic Filter wheel can be rotated in both counter clockwise or clockwise direction for filter selection.

The distance between the filter and sensor is only around 10mm when you connect it to ASI1600. So 1.25″ filters won’t have vignetting up to F5 focal ratio scope and 31mm filter won’t have vignetting up to F2 lens

The big EFW has two specifications: 8x31mm and 7x36mm. Thickness is still 20 mm.

The full EFW Set includes:
- 8*31mm or 7*36mm EFW body, T2 nosepiece, 1.25″ Holder-T2, T2-T2, USB2.0 Cable
- 1.25″ filter requires: threads length shorter than 3mm, height without threads less than 7mm
- 31mm filter requires: a set of M42 screws and washers needed to fix the filters are included in the package .

Software:
you just need to plugin the EFW with USB2.0 cable and install the   ASCOM driver . There are  ZWO Filter Wheel(1) and ZWO Filter Wheel(2) to select. Yyou can use either one of them. There are 2 ASCOM is for controling 2 EFW in one software.