Contains:NGC 6543, IC 4677

Image of the day 05/04/2018

Getting plate-solving status, please wait...
    Cat's Eye Nebula - NGC6543 - HaOIIIRGB, 




    

        Thomas Richter
    Cat's Eye Nebula - NGC6543 - HaOIIIRGB

    Cat's Eye Nebula - NGC6543 - HaOIIIRGB

    Technical card

    Resolution: 2913x2167

    Dates: March 18, 2018April 9, 2018April 18, 2018April 19, 2018April 20, 2018

    Frames:
    Baader B 1.25'' CCD Filter: 12x300" -20C bin 1x1
    Baader G 1.25'' CCD Filter: 12x300" -20C bin 1x1
    Baader Ha 1.25" 7nm: 27x1200" -20C bin 1x1
    Baader Ha 1.25" 7nm: 20x30" -20C bin 1x1
    Baader Planetarium O3 1.25" 8.5nm: 25x1200" -20C bin 1x1
    Baader Planetarium O3 1.25" 8.5nm: 20x30" -20C bin 1x1
    Baader R 1.25'' CCD Filter: 12x300" -20C bin 1x1

    Integration: 20.7 hours

    Flats: ~27

    Bias: ~100

    Avg. Moon age: 7.04 days

    Avg. Moon phase: 17.10%

    Astrometry.net job: 2033954

    RA center: 269.636 degrees

    DEC center: 66.632 degrees

    Pixel scale: 1.103 arcsec/pixel

    Orientation: 87.452 degrees

    Field radius: 0.556 degrees

    Locations: Nürnberg, Nürnberg, Bayern, Germany

    Data source: Unknown

    Description

    The outer area of NGC6543 is very faint and the core extremely bright.
    It was my longest exposure so far, and the conditions were very different.
    The image processing was a challenge.
    Maybe I will add some exposure time .

    Object description (wikipedia.org):

    The Cat's Eye Nebula or NGC 6543, is a relatively bright planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum was investigated by the English amateur astronomer William Huggins, demonstrating that planetary nebulae were gaseous and not stellar in nature. Structurally, the object has had high-resolution images by the Hubble Space Telescope revealing knots, jets, bubbles and complex arcs, being illuminated by the central hot planetary nebula nucleus (PNN). It is a well-studied object that has been observed from radio to X-ray wavelengths.

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    superelch
    Thomas Richter
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    Cat's Eye Nebula - NGC6543 - HaOIIIRGB, 




    

        Thomas Richter