The "BS" series contains the models BS 3200-A and BS 2400-A (image). The size of the star ball is 44 cm, projecting 3200 and 2400 stars, respectively. Both are meant for domes from 5 to 8 meters. While the sun and moon house on the apparatus, the positions of the planets have to be set up manually. The projector has astronomical grids, markers for the cardinal points, and dimmers for dusk and dawn. Constellation figures, the Milky Way and a few galactic objects also exist.