This has taken a lot for time (for me), in total around 2hours 30 minutes per channel ,so around 10 hours total . I haven't tried to control the size of the stars, will leave that, to another day maybe. The image has much less noise than most of the ones I do, because of the long integration time. The nebula is bigger than the field of view, I have missed the edges.
Wikipedia: NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. This 20×30 arcmin sized nebulosity is also associated with open cluster IC 1590, several Bok globules and the multiple star, B 1. It collectively forms Sh2-184, spanning over a larger area of 40 arcmin. A recent distance from radio parallaxes of water masers at 22 GHz made during 2014 is estimated it lies 2.82±0.20 kpc. (9200 ly.) from us. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.
