Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  IC1590  ·  NGC 281  ·  NGC281  ·  Sh2-184
Getting plate-solving status, please wait...


            Joey Troy
Powered byPixInsight


Imaging telescopes or lenses: William Optics Redcat 51

Imaging cameras: ZWO ASI533MC Pro

Mounts: Sky-Watcher EQM 35 Pro

Guiding telescopes or lenses: ZWO 30mm f/4 Mini Guide Scope

Guiding cameras: ZWO ASI 120 Mini Mono

Software: Pleiades AstroPhoto Pixinsight  ·  GIMP 2.10.22

Accessory: ZWO ASI Air Pro  ·  ZWO EAF Electronic Auto Focuser

Dates:Feb. 21, 2021Feb. 24, 2021

Frames:Optolong L-eXtreme 2": 16x600" (gain: 101.00) -10C

Integration: 2.7 hours

Darks: ~10

Flats: ~10

Bias: ~10

Avg. Moon age: 10.36 days

Avg. Moon phase: 78.22%

Bortle Dark-Sky Scale: 3.00

Astrometry.net job: 4255231

RA center: 0h 53' 5"

DEC center: +56° 39' 45"

Pixel scale: 1.570 arcsec/pixel

Orientation: -29.419 degrees

Field radius: 1.163 degrees

Resolution: 4075x3437

Locations: Backyard, Belen, NM, United States

Data source: Backyard


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.[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. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.

Edward Emerson Barnard discovered the nebula in August 1883, describing it as "a large faint nebula, very diffuse." Multiple star 'B 1' or β 1 was later discovered by S. W. Burnham, whose bright component is identified as the highly luminous O6 spectral class star, HD 5005 or HIP 4121. It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 arcsec. There has been no appreciable change in this quintuple system since the first measures were made in 1875.



  • NGC281, 


            Joey Troy
  • Final


            Joey Troy


Description: This was created using the following tutorial https://bit.ly/37TeXxw to get the yellow colors because we all know Pacman is yellow and some basic editing in Gimp to merge the star, Ha, and Pacman layer


Sky plot

Sky plot




            Joey Troy