QHY CFW3 Extra Large 9 Position Filter Wheel – 2″/50mm

QHY 3rd Generation XL Color Filter Wheel

QHY is introducing a revolutionary new 3rd generation filter wheel featuring an ultra-thin stepper motor drive and fully automatic filter switching capability. This particular model is 21.5 mm thick and offers nine positions for either 2″ or 50 mm round filters. For mounted filters, maximum thickness excluding filter thread height is 10 mm. There is also a 7 position filter disk that accepts 2″ or 50mm round filters as well, so users can change out which disk they would like to use. Learn more about the QHYCFW3 Filter Wheel and its impressive features in the comprehensive video below!

Ultra-Thin Hybrid Stepper Motor Drive

For their third generation color filter wheel design, QHYCCD is using an ultra-thin supreme quality hybrid stepper motor. This hybrid motor is more precise with a smaller step angle when compared to the PM stepper motors employed by many other filter wheels. To keep dust from accumulating, the motor is enclosed. This enhances the motor’s dependability while prolonging its life. Carousel rotation can be conveniently made in both clockwise and counterclockwise directions for quick and easy filter access.

Friction Drive with Zero Backlash

The most innovative difference between the motor drive used in QHYCCD’s 2nd generation filter wheels and these 3rd generation filter wheels is that this new filter wheel uses a friction drive for zero backlash during operation, while the previous model used a gear drive.

USB Serial Port Switch

Incorporates a serial port switch to enable fast shifting between serial and USB communication modes.

USB Powered

This filter wheel’s firmware is open source and compatible with Arduino. It supports QHY 4-pin connection control mode and is designed to be compatible with QHY’s Off-Axis Guider (OAG) for the corresponding size.

Beautiful Appearance

Cut from a single section of aluminum, QHYCFW3 filter wheels are expertly crafted with precision CNC machining and an exquisite main body finish. With a small design and comfortable feel, you won’t want to put this filter wheel down!

The filter carousel has been specially designed to allow the installation of unmounted filters with varying thickness. Mounted filters below 10 mm in thickness can be installed while unmounted filters of different thicknesses can also be mounted to the same filter disc. This makes filter positioning quicker and more precise.

• Ultra-Thin Hybrid Stepper Motor Drive
• Friction Drive with Zero Backlash
• USB Serial Port Switch
• USB Powered

• QHY 3rd Generation Standard 21.5mm Thickness 9 Position EFW – 2″/50mm