This is a nebula complex around IC 2162 in Orion. The various parts of it also are called Sharpless 254-258. The brightest part (Sh2-255) has a remarkable resemblance to the emission part of the Trifid nebula (M20).
the frames were compromised by thin clouds, but choosing only the best frames didn't give better results so I stacked all exposures that looked reasonably good.
Taken from the middle of Berlin with an 8" LX200 at
f/4.4, MX716 camera, video autoguider, Astronomik Halpha filter for 27x10 minutes.