I took this back on the 10th of March.
It is our old friend the Eta Carinae Nebula.
This time with a SII/OIII filter (thanks for the suggestion, @malcircuit !) and 120x90s@80 for the exposures. Then I ran it through the Dwarflab star removal tool, and post-processed the result in Snapseed.
I was not going to post it, but it came up as a background on my office screen today (long story), and I had not realised just how much detail it had.
#Dwarf3 #Astrodon #astrophotography #Astronomy #EtaCarinae #starless #Snapseed