CFW3 Small 7 Position Filter Wheel (Ultra Thin) - 1.25"/31mm

The QHY CFW3 Small 7 Position Filter Wheel (Ultra Thin) is a compact, fully automated filter wheel designed for planetary and deep-sky astrophotography. With an ultra-thin 15.5mm profile, it accommodates seven 1.25"/31mm round filters with a maximum thickness of 5.5mm (mounted), minimizing critical back focus loss. Featuring QHY's third-generation hybrid stepper motor with direct drive and zero-backlash friction drive system, this filter wheel efficiently rotates in both directions to access filters via the shortest path, reducing imaging session time. The wheel supports dual control via USB or QHY's 4-pin connection, includes Arduino-compatible open-source firmware, and is compatible with QHY Off-Axis Guiders for advanced imaging setups.