Guest lingduxingxi Posted April 23, 2014 Share Posted April 23, 2014 What happens? http://sdo.gsfc.nasa.gov/data/ Failure of the satellite? Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted April 23, 2014 Share Posted April 23, 2014 It's a normal phenomenon that happens quiet a few times in a year. These are calibrations methods that are necessary to keep the instruments healthy. It is not an alien that is sitting on the spacecraft and makes a happy dance ;-) Today, 23-Apr-2014, SDO will perform two maneuvers. First up is the EVE Field of View, starting at 1315 UTC (9:15 am ET). Second is the HMI/AIA Flatfield, starting at 1630 UTC (12:30 pm ET). During these maneuvers the Sun will dance about in the SDO images. These maneuvers are used to keep the instruments well calibrated. Link to comment Share on other sites More sharing options...
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