PlaneWave 2.8" CCD Spacer

This 2.8" CCD Spacer accepts a standard 2" barrel. These also come in lengths of 3.3" and 3.8". The back focus of the CDK20 is 5.8" from the racked in focuser with 1.3" of travel. To choose the correct spacer, you want the back focus of your camera plus the path length of any other accessory plus the CCD spacer to be between 4.8" and 5.8". PlaneWave Instruments Product Number: 200368-2