The Crab Nebula is a supernova remnant of a star that exploded in 1054 AD. It is the first recorded nebula that corresponds to a supernova event.
This image is a first light test of an AGO 12.5" iDK corrected Dall Kirkham telescope.
L = 18x5min
RGB = 10x5min each
Total = 4hrs
AT8RC @f/5.2 CCDT67 reducer Atik 383L/EFW2/OAG Lodestar Autoguider
Ha=3hrs OIII=3hrs SII=3hrs 20min