The Veil Nebula is a gigantic Supernova remnant divided into several sections that constitute the Cygnus Loop. It is best photographed in Summer and stays high in the sky for a long period of time. The Veil Nebula | The Cygnus Loop | The Veil Nebula Complex. Constellation: Cygnus. Object Type: Supernova Remnant. Distance: 1,470 light-years away. Magnitude: 7. Discovered in: 1784 by William Herschel