Even a low sun can be dangerously bright ! Always use proper filters and protect your eyes.
This sequence covers about 50 minutes as the sun sets and shows a weak halo and a pair of sundogs changing as the cirrus drifts through.
The camera was lined up by looking at the image on the viewing screen - not by looking through the viewfinder!
At this moment in addition to the weak 22 degree halo there was a sundog on each side of the sun plus an upper tangent arc touching the top of the halo.
Canon EOS 20D and 5D 11th July 2011