Santa Barbara Instrument Group (SBIG) - 5-position 1.25" filter wheel without filters for ST-7/8/9/10/2000 cameras

The CFW9 will be essentially the same size and shape as the current CFW8A to match the ST series
camera body when directly bolted to the front.  They will be difficult to tell apart by simply
looking at them but there may be some slight difference in backfocus.  The CFW9 will have the
same capacity of five 1.25” filters so there is little practical difference in the two except
that the CFW9 will plug into the I2C-AUX port on the cameras instead of the AO/CFW/SCOPE port as
the CFW8A does now.  This also means the CFW9 will not be compatible with older parallel versions
of the ST series cameras, it will only work with ST cameras that have USB electronics.