Goran Strand: Swedish photographer Goran Strand has been star-struck since he was a child. Today, he is one of the world's pre-eminent astrophotographers. He sheds some light for Keith Wilson about shooting lunar halos, solar eclipses and the Northern Lights

Every night, there is one photographic subject that is accessible to all of us, no matter where in the world we might be. All you have to do is look [...]