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Contains:  M 31, Great Nebula in Andromeda, NGC 224, M 32, NGC 221, M 110, NGC 205

Image of the day 09/11/2016

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    M31 (HaRGB), 





    
        

            John Renaud
    M31 (HaRGB)

    M31 (HaRGB)

    Technical card

    Resolution: 2703x2148

    Dates:Sept. 1, 2016Sept. 2, 2016Sept. 3, 2016Sept. 5, 2016Sept. 6, 2016

    Frames:
    Astrodon 5nm Ha: 11x900" -5C bin 1x1
    Astrodon Blue Tru-Balance I-Series Gen 2: 69x300" -5C bin 1x1
    Astrodon Green Tru-Balance I-Series Gen 2: 70x300" -5C bin 1x1
    Astrodon Red Tru-Balance I-Series Gen 2: 65x300" -5C bin 1x1

    Integration: 19.7 hours

    Darks: ~20

    Flats: ~50

    Bias: ~100

    Avg. Moon age: 2.34 days

    Avg. Moon phase: 8.90%

    Astrometry.net job: 1376366

    RA center: 10.706 degrees

    DEC center: 41.271 degrees

    Pixel scale: 2.650 arcsec/pixel

    Orientation: -90.391 degrees

    Field radius: 1.271 degrees

    Description

    At 2.5 million light years away, Andromeda is the nearest major galaxy to the Milky Way. Both are massive spiral galaxies, with Andromeda being the largest galaxy in the Local Group of about 40 galaxies. It is thought to contain a trillion stars, compared to the estimated 200-400 billion stars in the Milky Way.

    Andromeda is among the brightest of the Messier objects and the most distant object that can be seen with the naked eye. Andromeda was once thought to be a nebula - the Great Andromeda Nebula. It wasn't until 1924, when Edwin Hubble famously established the distance to Cepheid variable stars in Andromeda, that Andromeda was shown to actually be a giant galaxy outside our own galaxy.

    Comments

    Author

    qbool
    John Renaud
    License: None (All rights reserved)
    168225
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    M31 (HaRGB), 





    
        

            John Renaud

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