IC 2118 (also known as Witch Head Nebula due to its shape) is an extremely faint reflection nebula believed
to be an ancient supernova remnant or gas cloud illuminated by nearby supergiant star Rigel in the constellation of Orion.
It lies in the Eridanus constellation, about 900 light-years from Earth.
The nature of the dust particles, reflecting blue light better than red, is a factor in giving the Witch Head its blue color. (WIKI)

L-Ha-RGB image
Luminance for 10 Hrs Bin 1
Ha For 5 Hrs - Bin 2
RGB 60 min per channel - Bin 1

Total of about 18 Hrs

Tak FSQ106 with reducer
Moravian Instruments G3-16200 camera

Imaged from Tivoli farm Namibia