Here we go. My most ambitious processing to date. The #HelixNebula (aka #C63 , aka #NGC7293 ) is probably the closest planetary nebula to Earth. This image is created from subframes taken with my #Dwarf3 over 2 years and 18 sessions. I started with 4791 frames, 3816 ended up being stacked. A total of over 55 hours of observing time. Most of which I slept through. It took nearly 10 hours to stack inside the telescope itself. In amongst the Ha/OIII frames there is also one 3 hour session of SII/OIII, which brings the blue out a bit more. Restacked using the Dwarflab onboard Megastack, then post processed in their cloud Stellar Studio. Final recombining and tuning in #Snapseed . #Astronomy #Astrophotography #Astrodon #SmartTelescope #BackyardAstronomy #SouthernSky #PerthWA