This is my first attempt on photographing an emission nebula.
Please have a look at the artefacts in the top right corner, the lines and kind of rainbow like.
First I thought there was something wrong with my equipment, but I can't figure out what.
I've never seen it on any other image I've taken.
Now I suspect it could be light glare from the bright nearby star Deneb.
Could that be the case?
Some additional info:
Target: Pelican Nebula
Camera: Zwo ASI 294 MC Pro
Filter: Optolong L-Pro 2"
11 x 600 secs exposures
25 x 5 secs flats
25 dark flats