This eclipse season runs until March 17, 2015.
Tuesday, February 17, 2015
SDO's fifth anniversary was covered by a nice story on CNN.
Congratulations Monica and Sebastien, and congratulations to the SDO team!
Thursday, February 12, 2015
We also attended the opening of the Solarium exhibit that features SDO imagery and SOHO sounds opened yesterday at the Goddard Visitor Center. It is a cool way to watch hi-res images from SDO. The people who built SDO came by and we celebrated SDO's anniversary. (A rather interesting review appeared on this website.)
Another Space Weather spacecraft was launched yesterday. Welcome to the universe DSCOVR! Now we have two reasons to celebrate February 11.
Tuesday, February 10, 2015
Since the launch AIA has taken over 100 million images, with HMI not that far behind at 80 million. EVE has returned over 12 million EUV spectra of the Sun. There have been many science results, with over 2000 papers so far presenting SDO science results. My favorite observations include the trebuchet eruption, comets in the corona, and the Transit of Venus in 2012.
SDO is a great observatory! How about 5 more years?
Wednesday, February 4, 2015
Once the maneuvers are complete the usual data taking will resume.
Monday, February 2, 2015
SDO is a great example of how astronomers use light to measure and understand our universe. AIA and EVE look at light from the Sun at very short, extreme ultraviolet, wavelengths. By comparing AIA images we can detect small motions of the corona. HMI looks at visible light. One nice property of light is that we can measure how it interacts with the Sun to measure things at the Sun that are otherwise difficult (if not impossible) to measure. We use the Doppler shift to see the wave motions and the Zeeman effect to see the magnetic field at the surface.
Light is a wonderful thing!