The image shows the association of the star cluster NGC2244 and the Rosette Nebula in the Monocerus region of the Milky Way. Cluster and nebula are about 5,000 lightyears away. Parts of the nebula are a star birth region and the radiations of young stars exites the atoms of the nebulas gas and makes it visible for our eyes.
75 x 180s exposure, F6.0, ISO 400
Shot from my balcony wit a Pentax K3ii
Skywatcher AZ-EQ5 and MGEN autoguider
TS APO Triplet 80/480mm
Processing with DeepSkyStacker and Photoshop CC2107
full resolution:Rosettennebel/ Rosette Nebula/ NGC2244 by pete_xl, auf Flickr