Vixen's SX Large Accessory Plate is a heavy duty plate that contains a variety of slots and holes (smooth and threaded) for mounting telescopes & accessories to Vixen equatorial mounts.  Vixen's tube and accessory rings, fine adjustment units, guide scopes and other 1/4"-20 threaded bolt-on accessories can be mounted here.

The SX Large Accessory Plate makes an excellent platform for mounting scopes side by side for imaging/guiding or optical comparisons.  It is also great for custom mounting homebuilt and other non-Vixen tubes to Vixen-style equatorial mounts.  The plate comes with a removable dovetail rail on the bottom and an assortment of 1/4"-20 bolts and wingnuts.  The Great Polaris and Sphinx series mount versions of this device only vary by color.  Weighs 1.76 lb(800 g).