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

Image of the day 10/02/2015

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    Stephan's Quintet, LRGB, 





    
        

            Eric Coles (coles44)
    Stephan's Quintet, LRGB

    Stephan's Quintet, LRGB

    Technical card

    Resolution: 4003x4015

    Dates:Sept. 17, 2015Sept. 18, 2015Sept. 19, 2015Sept. 20, 2015Sept. 21, 2015Sept. 22, 2015Sept. 23, 2015Sept. 24, 2015

    Frames:
    Astrodon Blue Tru-Balance E-Series Gen 2: 10x1800" bin 1x1
    Astrodon Green Tru-Balance E-Series Gen 2: 14x1800" bin 1x1
    Astrodon Luminance Tru-Balance E-Series Gen 2: 52x1800" bin 1x1
    Astrodon Red Tru-Balance E-Series Gen 2: 14x1800" bin 1x1

    Integration: 45.0 hours

    Avg. Moon age: 7.10 days

    Avg. Moon phase: 47.26%

    Astrometry.net job: 792760

    RA center: 339.005 degrees

    DEC center: 33.968 degrees

    Orientation: 70.042 degrees

    Field radius: 0.200 degrees

    Description

    This is an LRGB image for Stephan's Quintet, a group of five galaxies, where four are directly interacting, and the fifth we have learned is actually a lot closer to us than the others, and only visually looks like part of the group.

    This is a drizzled and then cropped image. The drizzle was done to bring out as much detail as possible and the crop emphasized the five galaxies.

    Pfile pointed me to an interesting article about this galaxy group. Here is the ref http://arxiv.org/pdf/1009.2740v1.pdf and a quote from the article abstract. "The evolution of compact groups of galaxies may represent one of the few places in the nearby universe in which massive galaxies are being forged through a complex set of processes involving tidal interaction, ram-pressure stripping, and perhaps finally “dry-mergers” of galaxies stripped of their cool gas." This is an interesting read.

    Comments

    Author

    coles44
    Eric Coles (coles44)
    License: Attribution-NonCommercial-NoDerivs Creative Commons
    151128
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    Revisions

      Stephan's Quintet, LRGB, 





    
        

            Eric Coles (coles44)
      Original
    • Final
      Stephan's Quintet, LRGB, 





    
        

            Eric Coles (coles44)
      B

    Sky plot

    Sky plot

    Histogram

    Stephan's Quintet, LRGB, 





    
        

            Eric Coles (coles44)