Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC1590  ·  NGC 281  ·  NGC281  ·  Sh2-184
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NGC 281 - Pacman nebula, 



    
        

            urmymuse
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NGC 281 - Pacman nebula

Getting plate-solving status, please wait...
NGC 281 - Pacman nebula, 



    
        

            urmymuse
Powered byPixInsight

NGC 281 - Pacman nebula

Technical card

Imaging telescopes or lenses: Orion USA 8" f/3.9 Newtonian Astrograph Reflector

Imaging cameras: Canon 7D

Mounts: Orion Atlas EG-G

Software: Phd2  ·  Backyard EOS BackyardEOS  ·  AstroTortilla AstroTortila  ·  DeepSky Stacker Deek Sky Stacker  ·  Stellarium, Stellarium Scope  ·  photoshop cc 2019

Accessory: Orion 50 Guidescope  ·  Orion star shoot autoguider


Dates:Aug. 31, 2019

Frames: 25x300" (2h 5')

Integration: 2h 5'

Avg. Moon age: 1.26 days

Avg. Moon phase: 1.77%


Astrometry.net job: 3251257

RA center: 0h 52' 38"

DEC center: +56° 36' 58"

Pixel scale: 0.551 arcsec/pixel

Orientation: -171.037 degrees

Field radius: 0.563 degrees


Resolution: 5233x5160

Data source: Backyard

Description

Still enjoying the red following upgrade of my camera and use of duo narrow band filter

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.

E. E. Barnard discovered this nebula in August 1883, who described 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

  • NGC 281 - Pacman nebula, 



    
        

            urmymuse
    Original
  • NGC 281 - Pacman nebula, 



    
        

            urmymuse
    B
  • Final
    NGC 281 - Pacman nebula, 



    
        

            urmymuse
    C
  • NGC 281 - Pacman nebula, 



    
        

            urmymuse
    D

B

Description: Darkened back ground , made colours more vibrant

Uploaded: ...

C

Description: Reduced stars and played with the colours to try and get more hubble palette esk

Uploaded: ...

D

Description: Relooked at the TIF from scratch and have done a wide field for something to do ... I think the larger dark cloud in front of the nebula is more obviously a dark cloud rather than space

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Sky plot

Sky plot

Histogram

NGC 281 - Pacman nebula, 



    
        

            urmymuse

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