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The Panoramic Camera(Pancam)is one science payload launched to moon in 2013 on China's Chang'E-3 missions.The scientific goals of the Pancam are to assess the high resolution morphology,topography,and geologic context of lunar surface; to obtain color images of Chang'E-3 Lander and check it's status.Pancam also provides mission support measurements for the rovers,including hazard identification and digital terrain modeling to help guide long-term route decisions; high resolution imaging to help guide the selection of in situ targets.Pancam is a color,stereoscopic,panoramic imaging system consisting of two digital cameras mounted on a mast 1.5 m above the lunar surface.The mast allows Pancam to image the full 360?in azimuth and ?0?in elevation.Each camera utilizes a 2352?728 active imaging area frame transfer bayer-color COMS detector array.The Pancam optics have an effective focal length of 50 mm and a focal ratio of f/10,yielding an IFOV of 0.27 mrad/pixel and a FOV of 19.7?4.5.Two cameras are separated by 27 cm and have a 1?toe-in to provide adequate stereo parallax.Pancam was tested and calibrated to operate at room temperature in the laboratory: signal-to-noise is 44db,MTF is 0.33.The orbital image presents that Pancam works well,and the performance satisfy the needs to analyse the geological structures of lunar surface.