Today we start several calibration maneuvers, one each week for three weeks. First is the HMI Roll, scheduled to run for 7.5 hours starting at 1800 UTC (2 pm ET). Data will flow during this maneuver, whose purpose is to measure the optical properties of the HMI and AIA instruments. Although in the past we have seen the Sun flip over during the roll, the processing of the images should remove this effect. After that we have:
October 19: 1315 UTC (9:15 am ET) EVE Field of view; 1630 UTC (12:30 pm ET) HMI/AIA Flat-Field
October 26: 1830 UTC (2:30 pm ET) EVE Cruciform (4.5 hours)
October 27: Fall handover season ends
