In astronomy, the Pleiades (/ˈplaɪ.ədiːz/ or /ˈpliː.ədiːz/), 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.
Equipment Details
Camera: Canon EOS T3i/600D (Un-Modified)
Lens: Canon EF 75-300mm set at 150mm F5.0
Exposure: 2 Minutes (120 Seconds) Each
ISO: 3200
Number of Stacked Images: 79
Number of Dark Frames: 20
Number of Bias Frames: 20
Mount: Celestron CG4 with Clock Drive
Stacking Software: DeepSkyStacker
Processing Software: Photoshop CS6, Camera Raw
Shooting Date/Time 11/11/2015 11:33:11 PM
Image is from Tom Pickett
“Helping teens reach for their stars by filling the cosmos of their stories.” This image produced a spectacular view of the night sky showing the milky way - our home galaxy - the cosmic road! Image taken by Johannes Nolimeyer.
Tuesday, November 17, 2015
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