A SATELLITE ELECTRO-OPTICAL CAMERA EQUIPPED WITH FOCUSING MECHANISM USING TEMPERATURE CONTROL ON THE TELESCOPE STRUCTURE

摘要

PURPOSE: A satellite electro-optical camera for camera focusing by temperature control is provided to adjust a location of a second reflecting mirror by controlling temperatures of first and second heater units, thereby performing focusing. CONSTITUTION: A camera focal surface electronic portion(400) photographs an image by a photographing element. A first heater unit(500) and a second heater unit(600) surround a camera body tube. The first and second heater units are separated. A secondary reflective mirror is placed between the first and second heater units. The first and second heater units emit heat to heat the camera body tube. A control unit(700) controls heat emitting temperatures of the first and second heater units.