This is the Solar Dynamics Observatory Mission blog. It will consist of mission status, news, and event updates.
Next week, on October 26, 2016, SDO will perform the EVE Field of View calibration maneuver at 1315 UTC (9:15 am ET) and the HMI/AIA Flatfield calibration maneuver at 1630 UTC (2:30 pm ET).
During calibration maneuvers SDO science data may be unavailable, blurry, or otherwise not usable. On the other hand, the images can be fun to look at! At left is an AIA 304 image showing how SDO is tipped up a little during the first leg of the cruciform.
On October 30, 3016, SDO will experience a Lunar Transit between 1956 and 2056 UTC (3:56 and 4:56 pm ET). The Moon will cover about 59% of the Sun at the peak of this transit.
Thanks to Ryan for letting me show his post. You can see more of his eclipse pictures at https://twitter.com/ryanomilligan.
Enjoy the 2016 SDO Joint Solar Eclipse!
On August 31, 2016, SDO will perform the EVE field of view and HMI/AIA Flatfield Maneuvers. More on that later.
It took longer then we expected, but as of the end of the Friday work day, SDO is in science mode and all three instruments are returning science data. AIA is currently taking images with the nominal 8 images every 12 second program but it is running an older version of flight software that is affecting the Image Status Packet. We plan to leave the system in this configuration over the weekend.
It's been a long week for the SDO team and I hope they can return Monday ready to fix the remaining issues.
Thanks to all who helped SDO to return to operations.
The impact of the CME was not very dramatic when it reached Earth a few days later. But the energies of the radiation belt protons and electrons were increased enough that they caused an electronic component to arc and fail. There were several attempts to revive Telstar 401, but it was eventually declared a loss.
According to the Union of Concerned Scientists, there are almost 500 satellites currently operating in geosynchronous orbits about the Earth. Most of them are in the geostationary belt that allows them to appear stationary in the sky. There are about 100 defunct satellites in graveyard orbits further away from the Sun. But it is the failed satellites and spent boosters that blunder along and show up on the SDO conjunction report every month or so.
Telstar 401, a true ghost of space weather!