Messier 45 - The Pleiades

In astronomy, the Pleiades, or seven sisters, (Messier object 45) are an open star cluster containing relatively young hot blue 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. Pleiades has several meanings in different cultures and traditions.


The cluster is dominated by hot blue 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 alternate name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium that the stars are currently passing through. 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 neighbourhood.


Date: 2009-10-25

Location: South Common Observatory

Scope: Williams Optics Zenithstar 66mm @ F/5.9

Camera: Starlight Xpress SXV-H9

Guide Scope: Astro Professional 102ED

Guide Camera: SX Guidehead

Exposure (L): 5100 seconds (average 566 seconds)

Exposure (RGB): 700 seconds



.éntröpìa., s58y and 3 more people faved this
  • astrometry.net 6y

    Hello, this is the blind astrometry solver. Your results are:
    (RA, Dec) center:(56.6644400706, 24.2062793984) degrees
    (RA, Dec) center (H:M:S, D:M:S):(03:46:39.466, +24:12:22.606)
    Orientation:167.71 deg E of N

    Pixel scale:4.46 arcsec/pixel

    Parity:Reverse ("Left-handed")
    Field size :76.18 x 57.14 arcminutes
    Your field contains:
    The star Celaeno (16Tau)
    The star Electra (17Tau)
    The star Taygeta (19Tau)
    The star Sterope I (21Tau)
    The star Merope (23Tau)
    The star ηTau
    The star Atlas (27Tau)
    The star Pleione (28Tau)
    NGC 1432 / Maia nebula
    NGC 1435 / Merope nebula

    View in World Wide Telescope

    If you would like to have other images solved, please submit them to the astrometry group.
  • Renzo 6y

    very good! you might enhance the nebula contrast, though. very well done ;)
  • dave halliday 6y

    that makes us DSLR guys cry...
  • DIYastrophotography.webs.com 6y

    Really good processing , you brought out a lot of the nebulosity.
  • Narayan Mukkavilli 6y

    nice shot!
  • MysteryStevenson1 6y

    Hi, I'm an admin for a group called Anti Gravity, and we'd love to have this added to the group!
  • mgw_wgw 4y

    Ah !! To see them shining so close and bright .. wonderful :)
    www.astronomy2009.org/news/updates/697/ ( ?² )
5 faves
Taken on October 26, 2009
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