Been collecting data the past week or so for this image. Wasn't happy with first results so added a few axtra frames and tried reprocessing with updated Dark and Bias frames (being stuck at home has its benefit)
Image consists of:
Ha 25 frames of 5mins
SII 24 frames of 5mins
OIII 24 frames of 5mins
Total of 6 hours 5 mins
Equipment:
Scope Celestron Edge HD 8"
Focuser Moonlite Lite Crawler
Reducer Celestron 0.8
Mount Orion AZ/EQ G
Camera ZWO ASI1600MM - Cool
Guiding ZWO OAG and ASI290MM Mini
Filters Astronomik Ha, SII and OIII 6nm
Capture SGP Pro
Processing Pixinsight
The main nebulous area along with the open cluster within it includes bright, hot stars that are powering the nebulas glow. The brightest star within the middle is only mag 9 but is responsible for much of the nebulas glow. There are 2 open clusters that are actually background objects. Haffner 18 is a small elongated cluster just to the left of the small, intense yellow roughly arrowhead patch of nebulosity near centre of image. Lower down is a more prominent yellow patch with an open cluster (Haffner 19) embedded within.
I have heard this object called the "Skull and Crossbones nebula", cannot see it myself!!
