QHYCFW2-M

The QHYCFW2-M (medium size) filter wheel holds five standard 2-inch filters in threaded cells or five round 50mm unmounted filters.  An optional carousel allows the use of seven 36mm unmounted filters.

The QHYCFW2-M comes in two versions:  QHYCFW2-M-UltraSlim and QHYCFW2-M-Standard. The UltraSlim is 17mm thick and weighs 675g.  The Standard version is 21.5mm thick and weighs 705g.

The QHYCFW2-M is a second generation color filter wheel.  We improved both the mechanical and electrical design. The QHYCFW2-M has the following advantages:

  • Gear driven disk. Stable and solid.
  • Motor moved to a corner to increase the work area.
  • Increased the precision of filter positioning.
  • Supports USB port and powered by USB when connected with computer.
  • Supports the 4-pin QHY CFW socket on QHY11,QHY21/22/23 and InterCam series cameras.
  • Supports the 2-pin socket with QHY9 (requires external power supply).
  • Open Source Firmware, Arduino compatible
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Driver and Software Download
ASCOM FiltersPlug-in
ASCOM Filter[RS232] plug-in



QHYCFW2-M-US Supported Filters 
5 position 2-inch/50mm
2-inch mounted filters: maxium filter cell thickness  4.5mm (cell threads not included)
50mm unmounted filters: 1-4.5mm thick filters
7 position 36mm
1-4.5mm thick filters
8 position 1.25-inch
Maxium filter cell thickness 4.5mm (not including the cell threads) 
QHYCFW2-M-SR Supported Filters 
5 position 2-inch/50mm
2-inch mounted filters: maxiumfilter cell thickness 8mm (not includes the cell threads)
50mm unmounted filters: 1-8mm thick filters
7 position 36mm
1-8mm thick filters
8 position 1.25-inch
Maxium filter cell thickness 8mm (not including the cell threads)