My primary imaging scope is the AT66ED to which I attach a Canon 30D DSLR. In between the AT66ED scope and the DSLR is a William's Optics 0.8 focal reducer/field flattener. Without the field flattener, spherical aberrations at the corners of the image become a problem. With the field flattener, the focal length of the scope is reduced to about 320 mm. As can be seen in the photo of the Andromeda galaxy in the Astrophotography Photo section, this produces a very wide field of view.

The C6 is fitted with a Meade DSI color CCD camera and is used for autoguiding.

The AT66ED is held onto the saddle plate with a set of Astronomy Technology 90mm Guide Scope Rings. The guide scope rings allow me to easily adjust the scope to be exactly parallel with the C6 or to put it off axis. This makes it easier to find guide stars with the C6 and still put the AT66ED directly on target.

Also seen in this image is the heating pad attached to the Telrad on the C6. I finally broke down and added the dew heater after finding nothing else worked to keep the Telrad functional thru the night.