The new STX Guider is now shipping! Attached directly to the front of the FW7-STX or FW5-STX filter wheel, the STX Guider converts the wheel into a self-guiding system. It consumes only 3/4" of back focus, requires no adapters, and weighs just 1 lb. It is fully compatible with the AO-X adaptive optics accessory. Please see https://www.sbig.com/products/filter-wheels/stx-guider/ for more information.