Wikipedia Description:
IC 1590 is an open cluster located in the nebulosity of NGC 281. 279 stars with magnitudes less than or equal to 17 are visible within or near the cluster. The cluster is estimated to be 3.5 million years old,[1] making it relatively young compared to other star systems. Inside the cluster is a multiple-star system that emits light which helps give the dust in NGC 281 its glow.[2
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,[3] spanning over a larger area of 40 arcmin.[4] 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.[5] Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.
Acquisition Details:
| Telescope | Takahashi TOA-130 |
| Optics | Takahashi TOA-645 Flattener |
| Filter | OptoLong L-Ultimate |
| Camera | ASI2600MC Pro OSC |
| Integration Time | 6.6 hours |
| Subframes | 79 x 300 seconds |
| Date | 24 November, 2025 |
| Location | Carlsbad, California |