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Contains:  Maia nebula, NGC 1432, The star ηTau, The star Merope (23Tau)

Image of the day 01/18/2017

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    M 45 Pleiades or Seven Sister, 





    
        

            Lluis Romero Ventura
    M 45 Pleiades or Seven Sister

    Technical card

    Resolution: 1440x956

    Astrometry.net job: 1406432

    RA center: 56.640 degrees

    DEC center: 24.140 degrees

    Pixel scale: 1.821 arcsec/pixel

    Orientation: -89.197 degrees

    Field radius: 0.437 degrees

    Locations: LUIS ROMERO VENTURA, Àger, Lleida, Spain

    Description

    In astronomy, the Pleiades or Seven Sisters (Messier 45 or M45), is an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. The celestial entity has several meanings in different cultures and traditions.

    The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades was probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

    Source: Wikipedia

    About this Image:

    Location: Àger-Lleida-Spain
    Dates: 18-19-23 December 2016
    Avergage SQM: 21.4-21.6
    Telescope: GSO RC14” Truss f8
    Camera: Moravian G3-11000 classe 2
    Focuser: Feather Touch 3” Kit boss II
    Flattener: TSFlattener 2.5”
    Filters: Astrodon LRGB Gen2 I-Series True-Balance
    Exposures: L:18x300 sec bin1 // R:G:B: 10:10:10 sec x 300 sec bin1 & R:G:B: 15:15:15 seg x 600 sec bin1
    Total Exposure: 11.5 hours
    Processing: Pixinsight y Photoshop CC 2017

    Comments

    Author

    Astrosirius
    Lluis Romero Ventura
    License: None (All rights reserved)
    11228
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    M 45 Pleiades or Seven Sister, 





    
        

            Lluis Romero Ventura