Wow! The Pleiades! Beautiful... M45 is more commonly referred to as the Pleiades, and is the most famous open star cluster among amateur astronomers and the general public alike. Easily visible to the naked eye during the Winter. In the photo the most conspicuous of the Pleiades reflection nebulae is NGC 1435 around Merope, also called "Tempel's Nebula". This is the only one which was known to John Herschel when he compiled his General Catalog (GC) in 1864. Bravissimo! Ciao