This projector was originally sold to and used in the Tessman Planetarium at Santa Anna College, California. The A3P instrument was sold mostly to colleges and schools in the 1960s and 70s. This one has a Spitz serial number of 3275. The A3P is one of the most common of all the commercial planetarium projectors ever made. It projects about 1500 stars and uses both pinholes and also lens projection for the brighter stars and was designed for a 24 to 40 foot dome. We believe there were about 500 model A3P/A4 types produced by Spitz when it was mostly replaced by the model 512/1024 in 1973.
Museums' Spitz A3P and Nova Projectors
The 'Twins' equal the A3P and the 512 together
Spitz A3P Planetarium Planet Projector Analogs
