M16.
Left: 5-6/10/1999 : M16, Takahashi Epsilon 160, Kodak Technical Pan 2415 Hypered, 10 m.
Right: 6-7/04/2000, Takahashi Epsilon 160 + ST-7, single selfguided 15 m exposure.
2005, nights of 16-17 and 17-18 july. Vixen VC200L @ f/6 + ST-10XME + Astrodon H-Alfa filter 6 nM. 12x5m + 16x10m = 220 m total exposure.
