5 Sept. Very poor sky conditions (rain, clouds, very windy, 5 °C) today - I waited for a few hours and I got a lucky break in the clouds. Managed to get 2 single exposure shots with canon 550d at two different wavelengths - yellow one is at 540 nm to show sunspots, orange one is a H alpha one at 656 nm. Some flare activity is visible on the Ha shot around AR2673. These are interesting groups to follow. Both near western limb.
Estimated lengths: AR2673 = 85,000km, AR2674 = 204,000km.
Thanks for viewing.
Last edited by John W; 06-09-2017 at 01:16 PM.
Reason: Add info
