Location/ Date:

Eggersdorf, GER / 26.+ 27.+ 28. January 2017

Telescope/ Lens:

10" f/4 ONTC Newton

Mount:

Celestron CGE GPS

Camera:

Atik 383L+

Exposure time:

12x 1800" Astronomik Ha 6nm

14x 1200" Astronomik [OIII] 6 nm

14x 1200" Astronomik [SII] 12 nm

8x 300" Astronomik RGB each

Total exposure:

Description:

SH2-261, sometimes called the lower nebula is an emission nebula in the constellation of Orion. It lies in the far north-eastern part of Orion, about 6 degree west of  Alhena (γ Geminorum). The distance of SH2-261 is about 3300 light-years.

Image recording:

Frank Iwaszkiewicz

Image processing: