Saturday, January 11, 2014

Sunspot AR1944

It was clear today so I hauled out the scope to checkout the buzz about sunspot activity. I got it all set up and aligned and found the sun without problem. The sun almost fills the 10mm eyepiece FOV and I was able to spot AR1944 pretty quickly. As the sun moved in and out of some high mr's tail clouds i was able to pick out 3 more groups: AR1946, 1948, and 1949. The AR numbers are assigned by Noaa sequentially per year to Active Regions (AR). Comparison with photos at spaceweather.com was very good. There was only one ar that I could not see. AR1944 is several times the size of Earth. The largest spot in it is twice Earth's size.