An automatic introduction apparatus for automatically introducing a target celestial object by controlling a rotation of an astronomical telescope around at least two axes comprises: an image-capturing means capable of capturing an image of a celestial object at a plurality of focal distances; a celestial object database; an image processing section for extracting a set of information of each celestial object from the image of celestial object captured by the image-capturing means; and a celestial object identification means for identifying the celestial object whose image has been captured, by comparing the information of each celestial object extracted by the image processing sections with the celestial object information stored in the celestial object database. The alignment process is executed by defining a coordinate transformation information of a coordinate system in the astronomical telescope relative to a celestial coordinate system based on the position information of the identified celestial object. In the automatic introduction, after the introduction of the target celestial object, an image of celestial object is captured, the celestial object in the captured image of celestial object is identified, and the astronomical telescope is controlled by rotating it around two axes so that the target celestial object can be introduced into the center of field based on the position information for the identified celestial object. The alignment precision and the automatic introduction precision can be improved by shifting the focal distance of the image-capturing means in a step-by-step manner toward the telescopic field side.