QHYCCD selected a high quality ultra-thin hybrid stepper motor for the 3rd generation filter wheel design. Compared to the PM stepper motor used in many filter wheels, the hybrid stepper motor has higher precision, smaller step angle, and is more expensive. The motor is enclosed to prevent dust from entering the motor, thus improving reliability and extending motor life.
In respect of the evolution of the motor drive, our 2nd generation filter wheels used a gear drive, while this 3rd generation filter wheel uses a friction drive having zero backlash. It also positions and stops with high precision.
There is a switch button on the QHYCFW3. The serial port switch can accommodate fast switching between serial communication mode and USB communication mode.
The QHYCFW3 main body is cut from a single piece of aluminum by a precision CNC machine. The craftsmanship and finish are exquisite. When you hold the small design, you do not want to put it down!
The QHYCFW3 is available in four sizes; extra large (-XL), large (-L), medium (-M) and small (-S), to meet the needs of different models of astronomical cameras and astronomical telescopes. The medium and small versions are available in standard (-SR) and ultra-slim (-US) form factors.
- Model: QHYCFW3-L-7P (Large, 7-position)
- Housing Thickness: 21.5mm (.84")
- Filter Type: 2 inch mounted / 50mm round unmounted
- Maximum Filter Thickness: 10mm (.39")
- Minimum diameter: 19.8cm (7.8")
- Maximum diameter: 21cm (8.2")
- Weight: 911g