Planetarium having an auxiliary projector independently rotatable about a star field projector

摘要

A planetarium comprises a star field projector which projects the star field, a ring-shaped member which supports the star field projector rotatably about a first axis, a first rotating member which supports the ring-shaped member rotatably about a second axis orthogonally crossing the first axis, a support base which supports the first rotating member rotatably about a third axis orthogonally crossing the second axis, a second rotating member provided on the support base rotatable about the third axis independent of the first rotating member, and a coordinates projector provided on the second rotating member.