This video shows a large filament eruption on the northeast limb today. I made it from almost 2100 images, 21 hours of data from 00:00 to 21:00.
Monday, February 27, 2012
Friday, February 24, 2012
VIDEO: Filament Eruption from the SDO on 2012-02-24
This 211Å, 193Å, and 171Å composite video highlights a large filament eruption. It shows the northeast section of the Sun for 12 hours from 00:00 to 12:00. A composite video like this lets us see the action from the transition region all the way up into the corona. The red is the 211Å channel and represents temperatures around 3.5 million Fahrenheit. The green shows the 193Å channel which highlights temperatures around 2.25 million degrees Fahrenheit. And the blue is the 171Å channel with temperatures around 1.8 million degrees Fahrenheit.
Thursday, February 23, 2012
The Sun Today from the SDO
This is what the Sun looks like today from the Solar Dynamics Observatory. The image in the upper left is from the 4500Å filter showing the photosphere of the Sun. That is the light-emitting surface, what we see with our eyes. There are some sun spots rotating toward the horizon near the western limb. The other three images are composites made from combinations of data gathered by various EUV filters on the SDO satellite.
Tuesday, February 21, 2012
VIDEO: Lunar Transit from the SDO
Here is a 211Å, 193Å, and 171Å composite video of today's lunar transit. It shows the Sun for 4 hours from 00:00 to 16:00. Through the middle of the video the Moon can be seen passing between the SDO and the Sun!
Monday, February 20, 2012
193Å Running Difference Image
This is a running difference image, a simple graph representing the differences between two images gathered at different times. This one was made using the SDO AIA 193Å data from 00:30 and 01:30 on 2012-02-20. The original pair of images show us thermal characteristics of the Sun's corona, a region with temperatures typically around 1.25 million K, or about 2.25 million degrees Fahrenheit. This part of the Sun's atmosphere is tens of thousands of kilometers above the photosphere. The photosphere is the part that emits the light we see. The source images were acquired an hour apart, and the single image you see above is the result of processing them into a running difference graph.



