Patent ID: 6822802
Filing Date: 2004-11-23
Classification: G02B

Abstract:
A terrestrial telescope with a digital camera comprising:a group of objective lenses; an imaging optical system having an optical path and including the group of objective lenses and an imaging element disposed along the optical path at a position at which an image of a subject is formed by the group of objective lenses; an optical-path-splitting means disposed on the optical path of the imaging optical system between the group of objective lenses and the imaging element so as to be retractable from the optical path of the imaging optical system during imaging; an observation optical system for observing an optical image of the subject via the optical-path-splitting means disposed on the optical path of the imaging optical system; and imaging position correction means including an optical element insertable into the optical path of the imaging optical system to correct for any change in image-formation position when the optical-path-splitting means is retracted from the optical path of the imaging optical system during imaging.