coelostat
1. [ noun ] (physics,optics) optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror
Related terms: optical_device
Similar spelling:   colostrum
  colostomy
  Colston
  Colgate
  Coulston
  collocate
  colligate
  collegiate
  collectable
  collect