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Showing posts with label Herschel 400. Show all posts
Showing posts with label Herschel 400. Show all posts

Sunday, June 10, 2012

Enormous catalogs


Through the ceiling catalogs are lists of deep sky objects that occupy a fixed position in the sky. They are very useful for amateur astronomers, because they collect the main galaxies, nebulae and star clusters that can be seen with a telescope medium.
In the best known are: Messier catalog: the most famous and the first to be published. He was drafted by the French astronomer Charles Messier in 1769. It brings together 110 objects numbered M1 to M110, in the order in which the Messier discovered while watching the skies for comets.