Andrew Stone
The Pacman Nebula (NGC 281) in Cassiopeia glows at around magnitude 7, but that brightness is spread across an area slightly larger than the Full Moon. This image comprises around 28 hours of exposure in Hα/OIII and SII/OIII dual-band filters, taken with a 5.5-inch scope at f/4.3 and processed in the Hubble palette.