Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  NGC 281  ·  Sh2-184
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NGC281, 



    
        

            Joey Troy
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NGC281

Getting plate-solving status, please wait...
NGC281, 



    
        

            Joey Troy
Powered byPixInsight

NGC281

Equipment

Imaging Telescopes Or Lenses
William Optics Redcat 51
Imaging Cameras
ZWO ASI533MC Pro
Mounts
Sky-Watcher EQM-35 Pro
Filters
Optolong L-eXtreme 2"
Accessories
ZWO ASIair Pro · ZWO EAF
Software
GNU Image Manipulation Program (GIMP) · Pleiades Astrophoto PixInsight
Guiding Telescopes Or Lenses
ZWO Mini Guider Scope
Guiding Cameras
ZWO ASI120MM Mini

Acquisition details

Dates:
Feb. 21, 2021 ·  Feb. 24, 2021
Frames:
Optolong L-eXtreme 2": 16x600" (2h 40') (gain: 101.00) -10°C
Integration:
2h 40'
Darks:
10
Flats:
10
Bias:
10
Avg. Moon age:
10.36 days
Avg. Moon phase:
78.22%
Bortle Dark-Sky Scale:
3.00

RA center: 00h53m05s.83

DEC center: +56°3945.2

Pixel scale: 1.570 arcsec/pixel

Orientation: -29.419 degrees

Field radius: 1.163 degrees

More info:Open 

Resolution: 4075x3437

Locations: Backyard, Belen, NM, United States

Data source: Backyard

Description

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.

Comments

Revisions

  • NGC281, 



    
        

            Joey Troy
    Original
  • Final
    NGC281, 



    
        

            Joey Troy
    B

B

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

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC281, 



    
        

            Joey Troy