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6th July 2016 15:30
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Solar Dynamics Observatory (automated reports)
HMI Roll Today
We are starting the July maneuver season. Today is the HMI roll maneuver from 1500-2000 UTC (11 am ET to 4 pm ET). During the roll the Sun will appear to flip in the NRT data. This data is used to maintain the calibration of HMI and to study how round the Sun is.
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