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Contains:  NGC 7023

Image of the day 10/03/2018

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    NGC7023 Iris Nebula, 





    
        

            Jerry Macon
    NGC7023 Iris Nebula

    NGC7023 Iris Nebula

    Technical card

    Resolution: 4656x3520

    Dates:Sept. 9, 2018

    Frames:Astrodon Gen 2 RGB 36mm: 168x150" (gain: 99.00) bin 1x1

    Integration: 7.0 hours

    Avg. Moon age: 29.26 days

    Avg. Moon phase: 0.08%

    Bortle Dark-Sky Scale: 4.00

    Temperature: 15.00

    Astrometry.net job: 2271576

    RA center: 21h 1' 35"

    DEC center: +68° 10' 4"

    Pixel scale: 0.700 arcsec/pixel

    Orientation: 267.483 degrees

    Field radius: 0.567

    Locations: Dark Star Observatory, Taos, New Mexico, United States

    Data source: Own remote observatory

    Remote source: Non-commercial independent facility

    Description

    Imaged on nights of 9/9/2018, 9/10/2018, 9/15/2018.
    The Iris Nebula, also known as NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across.

    Comments

    Author

    jmacon
    Jerry Macon
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    NGC7023 Iris Nebula, 





    
        

            Jerry Macon