QHY CFW3 Large Color Filter Wheel - 50 mm 7 Position

QHY 3rd Generation L Color Filter Wheel

With the introduction of their innovative new 3rd generation models, QHYCCD has revolutionized what one can expect from a filter wheel moving forward. Incorporating an ultra-thin stepper motor drive, this 21.5 mm thick filter wheel is capable of fully automatic filter switching. It offers seven positions for 2" or 50 mm round filters. Maximum filter thickness for mounted filters, excluding filter thread height, is 10 mm. Learn more about the QHYCFW3 Filter Wheel and its impressive features in the comprehensive video below!

Ultra-Thin Hybrid Stepper Motor Drive

QHYCCD has chosen to use an ultra-thin, high quality hybrid stepper motor for the design of their third generation filter wheels. When compared to PM stepper motors used in many filter wheels, this hybrid stepper motor offers improved precision and a smaller step angle. An enclosed motor prevents the accumulation of dust for enhanced reliability and longer life. In addition, as filter rotation is reversible, the carousel can be rotated clockwise as well as counterclockwise for convenient filter access.

Friction Drive with Zero Backlash

Regarding the evolution of the motor drive, QHYCCD's 2nd generation filter wheels used a gear drive while their 3rd generation filter wheels use a friction drive that results in zero backlash during operation.

USB Serial Port Switch

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

USB Powered

Supports QHY 4-pin connection control mode, contains open source Arduino-compatible firmware, and is designed to work with a similar sized QHY Off-Axis Guider (OAG).

Beautiful Appearance

The main body of this QHYCCD 3rd generation color filter wheel is cut from a single precision CNC machined piece of aluminum. It boasts a skillfully crafted and elegant finish. As soon as you hold this filter wheel in your hands, its small design will prevent you from ever wanting to put it down!

The filter carousel has been especially 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.