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Exposures: L 20×600, R 20×600, G 20×600 B 20×600
Telescope: Televue NP101
Camera: QSI 683
Distance: 440 Light Years
Size: 110 Arc-minutes
Age: Approx. 100 Million Years
M45, also known as the Pleiades, is a bright open cluster with reflection nebula in the constellation of Taurus. There are several hot and bright blue stars in the cluster along with about 1000 other stars and they are thought to be about 100 million years old. The reflection nebula was once thought to be gas remnants from the star formation but it is now thought that the cluster of stars is moving through space and happened to cross through a neighboring dust cloud on its current path towards the constellation of Orion. The evidence for this is that the star cluster is moving at a different speed than the dust which shows as the reflection nebula.
Also known as the Seven Sisters from Greek Mythology, this open cluster is easily seen with the naked eye and is similar in shape to the Big Dipper. The nine brightest stars which are commonly seen are Sterope, Merope, Electra, Maya, Taygeta, Alcyone, and Celaeno all of which are named for the Seven Sisters and are daughters of Atlas (father) and Pleione (mother) the other two brightest stars. There are a few nebulous regions around some of the stars. The Maia nebula, NGC 1432 surrounds the star Maia and consists of stringy, hair like nebulosity. In between Maia and Merope lays two fairly bright horizontal lines that almost appear like a scratch across the lens. It is thought that these streaky lines are shaped by the magnetic alignment of the dust particles in the area. The Tempels nebula, NGC 1435 is below Merope and is slightly different in color from the rest of the area.
There is a small galaxy to the right of Electra that I have never noticed before. It is identified as PGC 13696.
Sorry it has taken me until now to get back to you and thank you for a great day spent with you and Larry. The tutoring was excellent and again I thank you. I was going through your photos of your equipment out at Anza I believe. Question- Do you ever bring the AP900 to the desert or is that permanent at home. I have the same NP101 and QSI 683 and love them to death. My next purchase will be a Paramount MX+ but it will be a while. Need to win the lottery. Again thanks for the good time and a great web site.