Li-Chun CHEN/M20 Trifid Nebula

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Title: M20 Trifid Nebula,  Photographer:  Li-Chun CHEN , Taiwan
Astro50D,  ISO800 723sec x  4 , August, 22, 2009  21:48:22
Astro-Physics Starfire EDF 155 (D=155mm F7) + 4″ field flattener + Takahashi EM200 Temma2
SBIG ST-V + D=50mm fl=250mm guiding.