Hi
This is the CFW8A filte wheel for the SBIG ST series cameras, and comes without filters...great for someone who might need a second carousel for an SBIG camera or to replace a defective one.
The CFW9 has replaced the CFW8A, but the only difference is that the former connects to the I2C port on the newer USB cameras, and is only operable with USB cameras, whereas this CFW can operate with the older parallel and USB cameras.
Description is here.
http://www.sbig.com/products/cfw8a_new.htm
$525AUD ono
cheers
Martin
