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ACS Resumes Science Operations
ACS was activated on the Side-2 electronics on Sunday July 2 2006. After an initial series of calibration bias, dark and flat field exposures, the first science observations were obtained on the evening of July 4 2006. The STScI ACS Team has been analysing the calibration data and inspecting the initial science images. So far, no significant anomalies have been identified. Based on the data to hand, the readnoise appears to be unchanged, while the dark current and hot pixel population on the WFC have both decreased as a result of lowering the temperature set point from -77C to -81C. ACS has resumed a full program of science observations. One of the first observations succeeded in identifying a z=1.4 supernova, see http://hubblesite.org/newscenter/new...eases/2006/36/ Initial analyses of calibration data by the ACS Team indicate that ACS is performing well in its new configuration. The ACS Team will continue to monitor the performance of the instrument closely, using a variety of calibration activities, during the next few weeks. |
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