M42 on December 13, 2004

M42 on December 13, 2004. Prime focus (f/8.0) and Astronomik Ha filter (FWHM ~130 Å). Integration times: 150×2.13 sec (5.33 min) for the core (note the Trapezium) and 37×8.53 sec (5.26 min) for the wings.