Location/ Date:

Bremen/Eggersdorf, GER / July/ August 2016

Telescope/ Lens:

Mount:

Celestron CGE GPS, EQ8

Camera:

Atik 383L+, Atik 460Exm

Exposure time:

34x1800"  Astronomik [OIII] 12 nm

20x 1200" Astrodon Ha

20x 1800" Astrodon [OIII]

4x 420" Astrodon RGB each

Total exposure:

Description:

SH2-129 and Outters4 are located in about 4 degrees distance to the well known nebula IC196 in the constellation of Cepheus. The distance to Earth is about 2300 light years. SH2-129 is surrounded by a loose aggregation of bright stars ilumminating  the nebula with their UV radiation.

Outters 4, also called Squid Nebula due to his shape is apparently a bipolar planetary nebula created by a triple star system.  Consistent with that scenario, Ou4 would represent a spectacular outflow driven by HR8119, a triple system of hot, massive stars seen near the center of the nebula. If so, the truly giant Squid Nebula would physically be nearly 50 light-years across.

Image recording:

Jens Zippel, Frank Iwaszkiewicz

Image processing: