M17, The Omega Nebula, 2nd July 2008, in false colour
Halpha 3 x 600secs, O3 3 x 600 secs, S2 3 x 600secs (Total = 1.5 hours), Halpha reused as Luminance at 70%
Full size (2184 x 1472 pixels) (1.1 Mbytes)