Unlock the SPEED of your Celestron SCT telescope with the Funstar Adapter for Fastar Compatible 8″ Celestron SCTs! The FunStar is an adapter for Fastar compatible Celestron SCT telescopes that allows you to place the Revolution Imager in the secondary mirror position of your SCT telescope allowing you to use the telescope at an amazing focal ratio of f/2, this gives you the widest possible views and the lowest exposure times!