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M45 THE PLEIADES OPEN CLUSTER

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.

M45 THE PLEIADES

Place:        Ager-Lleida-Spain SQM:         21.4 - 21.6 Dates:        18-19-23 DECEMBER 2016 Details Telescope:  GSO RC14 Truss Mount:        ASA DDM85 Camera:      Moravian G3-11000 Focuser:      Feather Touch 3 Kit Boss II Flattener:    TS 2.5 Exposure:    L:31x120 sec bin1                       RGB: 27:19:19 x 120 sec bin1 Processing:  Pixinsight & Photoshop CC Software:     MaximDL, Sequence,Autoslew Control Remote:  Talon6

Cluster

& Stars