Image orientation: North is on the right.
Telescope: Pentax 75 SDHF 75 / 500mm @ f/6.7 with Blue Fringe filter on Losmandy G11 mount.
Camera: MI G2-8300FW @ -15°C.
Exposure: (L+Hα)(R+Hα)GB. Hα - 15x600s47, L – 5 x 600s, RGB – each 5 x 600s.
Location: Rhein-Main area, Germany.
Processing: MaximDL, Photoshop, Pixinsight.
Publication: A previous version of this image was published as Astrofoto der Woche, Astronomie.de, 41 / 2011.