Mounting another telescope on top (piggyback) of your Meade LX200 or LX90 telescope requires a mounting plate and these tube rings.

Mounting a refractor telescope piggyback on your LX200 or LX90 can be great for either autoguiding or use as a wide-field imaging scope.  Combined with Meade Series 5000 Dovetail Plates, you will be able to allow other telescopes to be mounted on top.