Also known as the Mini Dovetail System. The MDS system is a lightweight, less expensive alternative to the D series accessories. This is the perfect solution for mounting astronomical accessories like guidescopes, finderscopes, and camera mounts. Dovetail bars are available for most popular Meade and Celestron SCT’s as well as custom lengths for attaching to clamshell rings. The MDS system can also be used as a counterweight system since it can be mounted to the underside of the OTA's.