Image of the day 01/31/2018

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    The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation, 




    

        Eric Coles (coles44)
    The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation

    The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation

    Technical card

    Resolution: 1778x1778

    Astrometry.net job: 1903686

    RA center: 303.840 degrees

    DEC center: 38.045 degrees

    Pixel scale: 0.253 arcsec/pixel

    Orientation: 300.113 degrees

    Field radius: 0.089 degrees

    Data source: Unknown

    Description

    This is an enlarged version of our Soap Bubble image. I have noted the Central Star/Post-AGB Star on the image. Initially we thought this was a white dwarf. But we were corrected by George Jacoby, Astronomer and Deputy Director for Technology at the Lowell Observatory. Here is what he said.

    "Just to be clear, the central stars of planetary nebulae are not yet white dwarfs. They will soon be white dwarfs in a few 100,000 years. The difference is that PN stars still have nuclear fusion occurring as a power source while white dwarfs do not."

    Thanks George.

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    coles44
    Eric Coles (coles44)
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      The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation, 




    

        Eric Coles (coles44)
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      The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation, 




    

        Eric Coles (coles44)
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    The Soap Bubble Planetary Nebula HRGB Image with Central Star Notation, 




    

        Eric Coles (coles44)

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