SDO: Image Gallery (2012 Sep 13)

See new, spectacular, or mysterious sky images.
Post Reply
User avatar
bystander
Apathetic Retiree
Posts: 21592
Joined: Mon Aug 28, 2006 2:06 pm
Location: Oklahoma

SDO: Image Gallery (2012 Sep 13)

Post by bystander » Fri Sep 14, 2012 10:24 pm


Click to play embedded YouTube video.
One Solar Rotation of Sunspots

A lot of sunspots peppered the Sun over a magnetically active, 23-day period (Nov. 4 - 30, 2011), which is one complete solar rotation. During this month most of the sunspots appeared in the Sun's northern hemisphere. This was the peak month thus far into the current solar cycle. The images were taken by SDO's HMI instrument in what we call intensitygrams, which is how the Sun appears in filtered light. The video shows how spots can change over hours and days. The movie consists of over 1000 frames.

Credit: NASA/GSFC/SDO/HMI
<< Previous SDO
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

Post Reply