Cadioptric: Combines the characteristics of refrators and reflectors by incorporating both lenses and mirrors. Schmidt-Cassegrain and Maksuto-Cassegrain designs offer the advantage of being very compact and portable for their aperture.,

Catadioptric Telescopes
These versatile telescopes have wide, compact tubes that house both mirrors and lenses. Catadioptric telescopes excel on all types of astronomical objects, and most work well for terrestrial observing, too.