Small size. Support five 36mm umounted filter or six 1.25inch filter .Thickness is only 15.5mm.The weight of QHYCFW2-S is 365g.

QHYCFW2-S is the secondary generation color filter wheel of QHYCCD. We improved the mechanical design and electric design. The QHYCFW2-S has the following advantages:

  • Gear driven disk. Stable and solid.
  • Specially designed filter disk allow different glass thickness for unmounted filters. From 0.7mm to 7mm.
  • Motor moved to a corner to increase the work area.
  • Increased the precision for filter location.
  • Support USB port and powered by USB when connected with computer.
  • Support the 4PIN QHY CFW socket on QHY11,QHY21/22/23 and InterCam series camera.
  • Support the 2pin socket with QHY9(Need external power supply).
  • Open Source Firmware, Arduino compatible

Copyright 2002-2015 QHYCCD
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Driver and Software Download
ASCOM FiltersPlug-in
ASCOM Filter[RS232] plug-in

Document Download

Refer to User Manual


QHYCFW2-S Supported Filters 
5 position 36mm
Maxium Glass Thickness 4mm unmounted filters
6 position 1.25inch
Maxium 6mm for the filter holder (do not includes the screw thread of the holder).