Submit your photo here. Comment or upvote on photo pages. Search via photographers' names. More improvements coming! To help, please donate.
Canon EOS M100, 90mm Mak-Cass with solar filter
Prime focus at 40x, 150x
It took 8 days for sunspot AR 2765 to travel approx. 1.2Mkm across the Sun's surface. Considering the Sun's circumference of 4.38Mkm, this puts the Sun's rotational speed at a little over 29 days at this latitude.
The Sun, being the huge ball if gas that it is, rotates much faster at the poles than it does at the Solar equator.
2024 EarthSky Fundraiser
Any amount will help us reach our goal.
Would you consider
donating?
If you've already donated, we apologize for the popup and greatly appreciate your support.