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Contains:  NGC 7023

Image of the day 11/12/2015

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    The Iris Nebula, 


            Roberto Colombari
    The Iris Nebula

    The Iris Nebula

    Technical card

    Resolution: 3303x2455 job: 1056717

    RA center: 315.149 degrees

    DEC center: 67.707 degrees

    Pixel scale: 2.094 arcsec/pixel

    Orientation: -90.199 degrees

    Field radius: 1.197 degrees


    The Iris Nebula
    Image recorded remotely at DeepSkyWest with a Takahashi FSQ106EDXIII and a QSI 683WSG-8.

    L: 37x900s
    RGB: (16, 17, 15)x900s

    Copyright: R. Colombari

    Flickr (for the future):

    These clouds of interstellar dust and gas have blossomed 1,300 light-years away in the fertile star fields of the constellation Cepheus. Sometimes called the Iris Nebula, NGC 7023 is not the only nebula in the sky to evoke the imagery of flowers, though. Still, this deep telescopic view shows off the Iris Nebula's range of colors and symmetries in impressive detail. Within the Iris, dusty nebular material surrounds a hot, young star. The dominant color of the brighter reflection nebula is blue, characteristic of dust grains reflecting starlight. Central filaments of the dusty clouds glow with a faint reddish photoluminesence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. Infrared observations indicate that this nebula may contain complex carbon molecules known as PAHs. The pretty blue petals of the Iris Nebula span about six light-years.

    Source: APOD



    Roberto Colombari
    License: None (All rights reserved)


      The Iris Nebula, 


            Roberto Colombari
    • Final
      The Iris Nebula, 


            Roberto Colombari

    Sky plot

    Sky plot


    The Iris Nebula, 


            Roberto Colombari

    In these public groups

    Imagers of Italy