Tuesday, November 25, 2014

Calibration Maneuvers on a Tuesday?

Today SDO did two calibration maneuvers. The EVE field of view started at 1315 UTC (8:15 a.m. ET) and the HMI/AIA flatfield started at 1630 UT (11:30 a.m. ET) and ended at 1900 UTC (2:00 p.m. ET). These motions are used by the instrument teams to track the performance of the instruments. They had been scheduled for October but were delayed to track AR 12192 across the disk and watch its re-emergence.

Here is an AIA 171 image at 1540 UTC (10:40 a.m. ET) showing a nice coronal loop in the northern hemisphere.