ZWO EFW 8 x 1.25" / 31mm
ZWO
ZWO EFW 8 x 1.25" / 31mm - 8 x 1.25" / 31mm is backordered and will ship as soon as it is back in stock.
The ZWO 8 x 1.25" Electronic Filter Wheel weighs only 400 grams, is CNC machined and has an optical thickness of only 20mm. This model can take 8 x 1.25″ mounted or 31mm unmounted filters.
The power absorption of the EFW is only 120mAh @ 5V so any USB cable can power it. The distance between the filter and sensor of the Pro cameras like the ASI533MM Pro is circa 10mm. This close distance prevents any vignetting with 1.25″ filters for telescopes up to f/5. For f/2 lenses or telescopes it is necessary to use 31mm filters.
Specifications
| Compatible filters | 8 x 1.25" / 8 x 31 mm unmounted |
|---|---|
| Ports |
USB |
| Power draw | 120 mA @ 5A |
| Power supply | USB cable |
| Maximum thickness of the filter | 7 mm (not including threads which must be less than 3 mm) |
| Optical thickness | 20 mm |
| Camera connection |
M42 x 0.75 female |
| Telescope connection | M42 x 0.75 female |
| Camera compatibility | 4/3" and smaller ASI cooled cameras or cameras with a male M42 x 0.75 thread |
| SKU | ZWO-EFW-8x1.25 |
Items included
- 8 x 1.25" / 31mm EFW body
- 1.25″ cover
- T2 nosepiece
- 1.25″ holder (with cover and 2 screws)
- T2-T2 adapter (male)
- Filter masks
- USB 2.0 cable (2m)
- Phillips head screwdriver
- M2 screws
Backfocus solutions
55mm backfocus with 4/3" or 1" cooled cameras
55mm backfocus with 4/3" or 1" cooled cameras and OAG
Downloads
