M45 (Pleiades)

Object Information:

The Pleiades, or Seven Sisters (Messier 45 or M45), is an open star clustercontaining middle-aged hot B-type stars located in the constellation of Taurus.

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.

AstroCat photos from Orion Nebula.

Image date:

January 30, 2016

Exposure Information:

1h23'20" exposure
Lights: 50x100" 800ISO
Darks: 10
Flats: 30
Bias: 50

Imaged at:
Prades, Tarragona, CATALUNYA - SPAIN
Equipment:

Optics - GSO- 200/1000 Newtonian f/5
Camera - Canon 450D moded (IR filter removed)
Mount - Sky-Watcher Neq6 PROII
Guiding scope – EZG 60/230
Guiding and planetary càmera – ASI 174MC