Messier 16, the Eagle Nebula in Serpens. The cluster embedded in the nebula is NGC 6611. The small open cluster above is Trumpler 32. I shot this from home on a very clear night on July 31, 2019, using the Astro-Physics Traveler and Hotech f/6 field flattener for a stack of 5 x 8-minute exposures at ISO 800 with the now 10-year-old filter-modified Canon 5D Mark II.
Messier 16 (Eagle Nebula, top) and Messier 17 (Swan or Omega Nebula, bottom), shot from home in southern Alberta with the objects low on the horizon, July 30, 2011. This is a stack of 5 x 5 minute exposures at ISO 1600 with the filter-modified Canon 5D MkII and the Borg 77mm f/4.3 astrograph lens (300mm focal length), and using the IDAS V3 nebula filter.
