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Contains:  IC 1396

Image of the day 08/11/2016

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    Elephant's Trunk Nebula (bicolor), 





    
        

            John Renaud
    Elephant's Trunk Nebula (bicolor)

    Elephant's Trunk Nebula (bicolor)

    Technical card

    Resolution: 2686x2153

    Dates:July 22, 2016July 31, 2016Aug. 1, 2016Aug. 2, 2016

    Frames:
    Astrodon 3nm OIII: 15x30" -5C bin 1x1
    Astrodon 3nm OIII: 61x600" -5C bin 1x1
    Astrodon 5nm Ha: 73x600" -5C bin 1x1

    Integration: 22.5 hours

    Darks: ~20

    Bias: ~100

    Avg. Moon age: 25.42 days

    Avg. Moon phase: 25.43%

    Astrometry.net job: 1376368

    RA center: 324.015 degrees

    DEC center: 57.528 degrees

    Pixel scale: 2.648 arcsec/pixel

    Orientation: -90.480 degrees

    Field radius: 1.266 degrees

    Description

    The Elephant's Trunk Nebula is an elongated dark globule that lies some 2400 light-years away in the constellation of Cepheus. Situated in the larger IC 1396 nebula, it is a dense concentration of interstellar gas and dust that is being compressed by intense radiation and stellar winds from a very bright, massive star triplet nearby (seen in the image as the big, bluish "star" directly above the globule). The winds are responsible for the bright, circular rim that makes up the "head" of the globule, as well as the tail of gas (just to the left of globule in the image). The globule is backlit by the star triplet and therefore appears silhouetted when viewed in the visible-light wavelength range. Infrared images taken by the Spitzer Space Telescope show many previously hidden stars in the globule, including many young stars.

    Comments

    Author

    qbool
    John Renaud
    License: None (All rights reserved)
    115918
    Like

    Revisions

      Elephant's Trunk Nebula (bicolor), 





    
        

            John Renaud
      Original
      Elephant's Trunk Nebula (bicolor), 





    
        

            John Renaud
      B
    • Final
      Elephant's Trunk Nebula (bicolor), 





    
        

            John Renaud
      C

    Sky plot

    Sky plot

    Histogram

    Elephant's Trunk Nebula (bicolor), 





    
        

            John Renaud

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