Contains:  NGC 7320, NGC 7319, NGC 7318, Stephan's Quintet, NGC 7317
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Stephan's Quintet, 





    
        

            stevebryson
Stephan's Quintet

Stephan's Quintet

Technical card

Resolution: 1212x896

Dates:Sept. 18, 2012Sept. 19, 2012Sept. 20, 2012Sept. 22, 2012

Frames:Orion SkyGlow 2" Imaging Filter: 41x900" -20C bin 1x1

Integration: 10.2 hours

Avg. Moon age: 4.58 days

Avg. Moon phase: 23.47%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 89015

RA center: 339.007 degrees

DEC center: 33.963 degrees

Pixel scale: 1.107 arcsec/pixel

Orientation: 87.896 degrees

Field radius: 0.232 degrees

Data source: Unknown

Description

The redder galaxies are in the processes of merging. Notice the faint tail to the right of the blue galaxy? That is a streamer of stars thrown out by the gravitational interaction of the redder galaxies.

The bluer galaxy is a chance alignment, and is 10 times closer.

Comments

Author

stevebryson
stevebryson
License: Attribution-NonCommercial-ShareAlike Creative Commons
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Revisions

  • Stephan's Quintet, 





    
        

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    Original
  • Final
    Stephan's Quintet, 





    
        

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    B

Sky plot

Sky plot

Histogram

Stephan's Quintet, 





    
        

            stevebryson