Sunspots are temporary phenomena of the Sun's surface. They are essentially areas with reduced surface temperature, visible to us through special filters that block nearly 99,99% of the intense Sunlight. The seabird that flew fast in front of the Sun's disk was an unexpected treat! It is possible to see sunspots even without the use of a filter only when the Sun is very low at the horizon, at the sea level. The shot was taken from my home at Chalandri, Athens.
Camera Model Canon EOS 550D, Shooting Date/Time 20/2/2013 13:57, Author Chris Kotsiopoulos, Tv( Shutter Speed ) 1/500 sec, Av( Aperture Value ) 15.0, ISO Speed 200, SW ED 80 telescope + barlow 2x, Focal Length 1200.0 mm