Messier Catalogue
The Messier Catalogue was compiled in the late 18th century by French astronomer Charles Messier, whose primary goal was to identify objects that might be mistaken for comets. It contains 110 bright deep-sky objects, including galaxies, globular and open star clusters, and nebulae. Because Messier objects are generally bright and relatively easy to observe, they are extremely popular with amateur astronomers and were some of the first deep sky objects I attempted.
