User manual for QHY9 monochrome cooled astronomical CCD camera, providing information on safety instructions, standard configuration, optional accessories, camera interface and instructions, quick start and camera installation, DC201 input range, product usage temperature and humidity, chip condensation issues, long-term use and remote observatory considerations, QHY9 chip readout modes, BLOOMING control issues, cooler protection, CCD surface cleaning, GAIN and OFFSET settings, QHY9 mechanical dimensions, QHY9 back focal distance, software beginner tutorial, QHY9 CCD image calibration, BIAS image capture, DARK image capture, FLAT image capture, Dark Flat image capture, shooting with QHY9 connected to filter wheel in EZCAP, shooting with QHY9 connected to filter wheel in MAXIM DL.