Choose a PROFESSIONAL TELESCOPE here on earth, or in space around the Essay

Choose a PROFESSIONAL TELESCOPE here on earth, or in space around the Earth, with which to observe Charles Messiers Butterfly Cluster - Essay ExampleMost of the bright stars in this cluster are hot, blue B fount stars but the brightest member is a K type orange giant star, BM Scorpii, which contrasts sharply with its blue neighbors in photographs. BM Scorpii is classed as a articulated lorry regular variable star, its brightness varying from order +5.5 to magnitude +7.0.Estimates of the Butterfly Clusters distance have alter over the years, with a mean value of around 1,600 light years, giving it a spatial property of some 12 light years. Modern measurements show its total visual brightness to be magnitude 4.2 (www.answers.com....)Butterfly Cluster is an open cluster in Scorpius 4 northwest of M7 which contains about 80 stars close to in the shape of a butterfly. Visible to the naked eye, it was first noted by Giovanni Hodierna before 1654. Its close to conspicuous star is an o range giant K star of magnitude 6.2. (daviddarling info.)California crosstie for Research in Astronomy, own and operate the Keck backgrounds. It is an association of the California Institute of Technology and the University of California. I conducted my observations from the Keck Telescope in this institute. My choice was for this