Pleiades

From Wikipedia, the free encyclopedia

"The Pleiades, also known as the Seven Sisters and Messier 45, are 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 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 were 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."

Date :  December 2015

Location : Arizona Sky Village, Portal, Arizona

Equipment used :
 Lens or telescope -- AP 130 EDF with Field Flattner
 Mount -- AP 1200
 Camera -- QSI 683wsg with Lodestar 2x guider

Acquistion Software : ACP, MaxIm DL, Focusmax
Processing Software : PixInsight, Photoshop

Exposure Detail : RGB combine using HDR          Total hours  10.2