| 摘要 |
PROBLEM TO BE SOLVED: To provide a telescope, a telescope main body and an eyepiece, where a user can easily recognize a relation between the extent of an observation field observed through the eyepiece and the extent of a photographing field to be photographed by an imaging element, regarding the telescope constituted so that the user can photograph by the imaging element while observing through the eyepiece. SOLUTION: The telescope is provided with an image forming means for forming image data on a related display image geometrically showing the relation between the extent of the observation field observed through the eyepiece optical system and the extent of the photographing field to be photographed by the imaging element, and a display 15 for displaying the related display image. A circle 400 corresponding to the extent of the observation field and an area of a rectangle 300 corresponding to the extent of the photographing field are displayed in the related display image, and an image picked up by the imaging element is displayed in the area of the rectangle 300. COPYRIGHT: (C)2006,JPO&NCIPI
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