Believe it or not: this is a planetary nebula in constellation Cassiopeia.

It is only about 700 light years away was first thought to be a supernova remnant. Spectral analysis of its emitted light however revealed its true nature as a planetary nebula, a dying sun-like star, which has blown its outer shell into the surrounding installer gas. What makes it so interesting is its unusual shape. The prototypes of planetary nebula as the Ring Nebula or the Helix Nebula are definitively shaped more symmetrically. Here we see one edge which is glowing more brightly than the opposite side of the nebula. The only reasonable explanation is that the progenitor star and the expanding gas shells are moving with high velocity of about 125km/s through the interstellar medium. So we see a sharp bow shock on the front side of the moving system.
The image shows some unusual background due moonlight and high clouds passing through the FOV during most of the night.
The image is mirrored relativ to the „normal“ representation.

Celestron RASA 11 v2
Celestron CGX-L mount
RisingCam ATR3CMOS26000KPA
IDAS NBZ UHS filter
Bortle 4-5
64% moon and quite some high clouds

302x60sec (approx. 5h)
PixInsight
Photoshop