This is the Solar Dynamics Observatory Mission blog. It will consist of mission status, news, and event updates.
Here is the Flight Ops Team movie of the transit
I hope everyone is enjoying SDO's view of the Sun as we near the maximum of Solar Cycle 25!
Here is a movie of the predicted 20 May 2023 lunar transit:And here is what a daily movie shows for that date:
NASA TV will stream the launch starting at 11:45 AM MDT (1:45 pm ET) at the link https://video.ibm.com/channel/nasa-tv-wallops.
During the calibration activity science data may be missing, blurred, or shifted.
These polar filaments are a key part of removing the previous cycle's magnetic field from the poles of the Sun. As Solar Cycle 25 field erupts near the equator, some of it moves towards the poles where it meets the last remaining magnetic field of Solar Cycle 24. The fields tend to have opposite directions and they form a filament where they meet. This filament will circle the pole. Some of the oddity in this movie is seeing the plasma move around the pole in both directions.
The Sun will continue to surprise us, in SDO's 13th year and probably for many years to come.
I would like to thank the people who built and launched SDO, it has been an amazing observatory. I congratulate the people who run SDO on keeping this fantastic tool on station and performing great!
SDO is GO!
The blues lines are drawn to touch the poles of the Sun in the image from last July. You can see that the Sun appears to be a bit larger near perihelion than at apohelion. The SDO telescopes cannot change the size of their images and HMI in particular had to allow for this change in apparent size when designing the optics.
Happy Perihelion 2023!
This test assures that the SDO Team will be able to point SDO at an incoming comet with a 24-48 hour notice from the Sungrazer Comet Watchers.