Uncle Milton Star Theater Pro

Brand: Uncle Milton Star Theater Pro

A sphere on a base that shows up to 10,000 stars on walls and ceiling, with a rotation option, a focus dial around the optical lens and a timed shutoff. The set ships with two high resolution discs, one starfield and one Earth, Moon and Sun, plus a planetarium soundtrack CD, an AC adapter and a lens cover; three AA batteries work as an alternative power source. Extra Northern and Southern high resolution discs were sold separately and still turn up.

The model is discontinued, so it is a used market purchase: check that the adapter, discs and lens cover are all present before paying. It remains a decent classroom or bedroom option for children learning constellations, and the price of a boxed used unit sits below most new planetariums. Anyone who wants app control or a modern disc catalogue should look elsewhere.