Santa Barbara Instrument Group (SBIG) - 10-position 1.25" filter wheel without filters for ST-7/8/9/10/2000 (also "SA" version for ST-402/1603/3200 and third party cameras)

The new CFW10 is a ten-position filter wheel designed for the USB version of our ST camera series
or any camera where a serial port is available for controlling the wheel.  The CFW10 accepts
control input via either the I2C port or the RS232 serial port.  When attached to an
ST-7/8/9/10/2000 USB camera, the filter wheel receives power and control commands through the I2C
accessory port of the camera - no additional power or cable to the computer is required.  The
stand alone version, CFW10-SA, is for use with other cameras, the filter wheel is controlled via
an RS232 serial port and is powered by an external 12VDC power supply. The filter slots are
threaded for standard 1.25” filters. 

The portion of the housing between the camera and the telescope is only about 3/4” (20mm) thick
for minimum back focus.  Two versions of the housing make it possible to use the CFW10 either as
a separate unit, or as an integral piece replacing the face plate of the ST series camera.  The
replacement version contains a high quality optical window with superior AR coatings.  By using
the filter wheel housing as a replacement face plate for the camera, an additional 1/4” (6mm) in
back focus is eliminated and normal 35mm camera lenses may be used with the filter wheel in
place.  

The front aperture of the CFW10 contains standard t-threads.  A custom camera lens adapter will
be available for commonly available 35mm Nikon, Canon, Olympus and other lenses.  For attachment
to the telescope, a 1.25” nosepiece (shown) or 2” nosepiece may be used, or a t-thread to visual
back adapter for more secure fit to Schmidt-Cassegrain scopes.   For other scopes, any adapter
with male t-threads can be used to secure the filter wheel. 

The CFW10 will be offered in addition to the CFW8A as an option for any ST series camera.  It
should be noted, however, that the CFW10 will not work with older parallel cameras unless one has
an available serial port on the computer to control the CFW10 through a separate serial cable.