In a refracting telescope, objective lens (a converging lens) gathers all the light from the object and forms an image at a distance called the focal length of the lens.
(objective lens; gathers; all the light; from the object; L:In a refracting telescope) (objective lens; forms; an image; L:at a distance; L:In a refracting telescope) (a distance; called; the focal length of the lens)
objective lens objective lens a distance
gathers forms called
all the light from the object L:In a refracting telescope
an image L:at a distance L:In a refracting telescope
the focal length of the lens