ZWO 7-Position Electronic Filter Wheel for 2" or 50.4mm Filters

Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available.
- This item is out of stock.
- We have no ETA from the manufacturer at this time.
- Sign up for back-in-stock alerts to be notified when this item becomes available.
Lower 48 States:
Orders over $50 ship free within the Lower 48 using a carrier and service we select based on your items and delivery location. Faster shipping options may be available at checkout.
U.S. Outside the Lower 48 (AK, HI, PR):
Free shipping on orders over $50 applies to many—but not all—items. Add items to your cart and enter your ZIP code to see available shipping options and any costs.
International Orders:
Free shipping does not apply to international orders. You’ll see available shipping options and costs during checkout. Some items can’t be shipped internationally due to size or manufacturer restrictions. Duties, taxes, brokerage fees, and tariffs are not included and are the customer’s responsibility.
- ZWO Electronic Filter Wheel provides automated control of up to 7 filters (not included)
- Works with 2” threaded and unmounted 50.4mm astronomy filters
- Only 20mm (0.79”) thick and weighs just 650g (22.9oz), yet made of aircraft-grade CNC machined black-anodized aluminum
- Powered by USB connected through computer or through an astronomy camera (not included)
- Includes M54(male)-M48(female) adapter, M54(male)-M42(female) adapter, and a seven-position carousel
The ZWO EFW-7x2 filter wheel offers precise electronic control of filter positioning during astronomical imaging. It’s ideal for use with large-sensor astronomy camera that require 2” filters. It accepts up to seven 2” threaded filters or 50.4mm +/- 0.5mm unmounted filters with a cell height that does not exceed 7mm and in which the male thread length does not exceed 3mm.
With a thickness of 20mm (0.79"), this filter wheel is made of black-anodized aircraft-grade aluminum and uses a whisper-quiet Japanese-made stepper motor to help ensure years of reliable field use. When used with a monochrome astronomy camera, this electronic filter wheel and a set of color or narrowband filters (not included) allow you to capture spectacular color images of astronomical objects. The ZWO 7-position EFW-7x2 filter wheel weighs just 650g (22.9oz) so it won't bog down your telescope mount. When connected to ZWO ASI6200 full-frame camera, the distance from the filter to the sensor is about 18mm.
The bi-directional electronic filter wheel is powered and controlled through the USB port on your camera or directly via a USB cable connected to your computer, so you don't need any extra power supplies to power the wheel. A USB2.0 cable is included. With ASCOM and SDK control modes, the wheel can be controlled with a wide range of standard astronomy and imaging software. The maximum power supply of this EFW is approximately 120mAh @ 5V which can be delivered from a cooled ZWO camera’s USB2.0 port (camera sold separately).
What's in the Box?
- EFW2*7 body
- USB2.0 – 2m cable
- A bag of M2.5*6 screws (6pcs/ bag)
- A bag of filter masks for 50mm filters (7pcs/ bag)
- Phillips screwdriver
- A bag of M2*4 flat screws (23pcs/ bag)
- M54M-M48F adapter
- M54M-M42F adapter
- M54M-M48F-2 adapter
- Darkening rings set (4pcs)
Other Information
- Country of Manufacture: China
The ZWO EFW-7x2 filter wheel offers precise electronic control of filter positioning during astronomical imaging. It’s ideal for use with large-sensor astronomy camera that require 2” filters. It accepts up to seven 2” threaded filters or 50.4mm +/- 0.5mm unmounted filters with a cell height that does not exceed 7mm and in which the male thread length does not exceed 3mm.
With a thickness of 20mm (0.79"), this filter wheel is made of black-anodized aircraft-grade aluminum and uses a whisper-quiet Japanese-made stepper motor to help ensure years of reliable field use. When used with a monochrome astronomy camera, this electronic filter wheel and a set of color or narrowband filters (not included) allow you to capture spectacular color images of astronomical objects. The ZWO 7-position EFW-7x2 filter wheel weighs just 650g (22.9oz) so it won't bog down your telescope mount. When connected to ZWO ASI6200 full-frame camera, the distance from the filter to the sensor is about 18mm.
The bi-directional electronic filter wheel is powered and controlled through the USB port on your camera or directly via a USB cable connected to your computer, so you don't need any extra power supplies to power the wheel. A USB2.0 cable is included. With ASCOM and SDK control modes, the wheel can be controlled with a wide range of standard astronomy and imaging software. The maximum power supply of this EFW is approximately 120mAh @ 5V which can be delivered from a cooled ZWO camera’s USB2.0 port (camera sold separately).
What's in the Box?
- EFW2*7 body
- USB2.0 – 2m cable
- A bag of M2.5*6 screws (6pcs/ bag)
- A bag of filter masks for 50mm filters (7pcs/ bag)
- Phillips screwdriver
- A bag of M2*4 flat screws (23pcs/ bag)
- M54M-M48F adapter
- M54M-M42F adapter
- M54M-M48F-2 adapter
- Darkening rings set (4pcs)
- ZWO Electronic Filter Wheel provides automated control of up to 7 filters (not included)
- Works with 2” threaded and unmounted 50.4mm astronomy filters
- Only 20mm (0.79”) thick and weighs just 650g (22.9oz), yet made of aircraft-grade CNC machined black-anodized aluminum
- Powered by USB connected through computer or through an astronomy camera (not included)
- Includes M54(male)-M48(female) adapter, M54(male)-M42(female) adapter, and a seven-position carousel
The ZWO EFW-7x2 filter wheel offers precise electronic control of filter positioning during astronomical imaging. It’s ideal for use with large-sensor astronomy camera that require 2” filters. It accepts up to seven 2” threaded filters or 50.4mm +/- 0.5mm unmounted filters with a cell height that does not exceed 7mm and in which the male thread length does not exceed 3mm.
With a thickness of 20mm (0.79"), this filter wheel is made of black-anodized aircraft-grade aluminum and uses a whisper-quiet Japanese-made stepper motor to help ensure years of reliable field use. When used with a monochrome astronomy camera, this electronic filter wheel and a set of color or narrowband filters (not included) allow you to capture spectacular color images of astronomical objects. The ZWO 7-position EFW-7x2 filter wheel weighs just 650g (22.9oz) so it won't bog down your telescope mount. When connected to ZWO ASI6200 full-frame camera, the distance from the filter to the sensor is about 18mm.
The bi-directional electronic filter wheel is powered and controlled through the USB port on your camera or directly via a USB cable connected to your computer, so you don't need any extra power supplies to power the wheel. A USB2.0 cable is included. With ASCOM and SDK control modes, the wheel can be controlled with a wide range of standard astronomy and imaging software. The maximum power supply of this EFW is approximately 120mAh @ 5V which can be delivered from a cooled ZWO camera’s USB2.0 port (camera sold separately).
What's in the Box?
- EFW2*7 body
- USB2.0 – 2m cable
- A bag of M2.5*6 screws (6pcs/ bag)
- A bag of filter masks for 50mm filters (7pcs/ bag)
- Phillips screwdriver
- A bag of M2*4 flat screws (23pcs/ bag)
- M54M-M48F adapter
- M54M-M42F adapter
- M54M-M48F-2 adapter
- Darkening rings set (4pcs)
Other Information
- Country of Manufacture: China
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |

ZWO 7-Position Electronic Filter Wheel for 2" or 50.4mm Filters


















