Mission Manager Update, March 18, 2009
Engineers are continuing the procedure of calibrating Kepler's photometer in the dark, with its dust cover on. Due to the fact that the instrument's charge-coupled device (CCD) focal plane (the area where light from the telescope will be focused ) is so big, it does not have a developed in shutter to keep light out. Kepler's focal plane is one square-foot, while the focal plane in your digital camera is the size of a fingernail. Dark calibration records are being taken at different sun angles, the first three of which are now total. The forth perspective is designed to offer the darkest background and will point the telescope as away from the sun as feasible while preserving sufficient sunlight on the solar panels to power Kepler's electrical systems.
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Engineers are continuing the process of calibrating Kepler's photometer in the dark, with its dust cover on.
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Mission Manager Update, March 18, 2009
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