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Charles Messier. The first edition of 1774 covered 45 objects (M1 to M45).The total list published by Messier in 1781 contained 103 objects, but the list was expanded through successive additions by other astronomers, motivated by notes in Messier's and Méchain's texts indicating that at least one of them knew of the additional objects.
c. 300 BC — star catalog of Timocharis of Alexandria; c. 134 BC — Hipparchus makes a detailed star map; c. 150 — Ptolemy completes his Almagest, which contains a catalog of stars, observations of planetary motions, and treatises on geometry and cosmology; c. 705 — Dunhuang Star Chart, a manuscript star chart from the Mogao Caves at Dunhuang
You are free: to share – to copy ... Simple single page Star Chart for the Messier Objects. SVG format. -- w: ... Hubble Guide Star Catalog – Astrographic Catalog ...
Sir Patrick Moore compiled the Caldwell catalogue in 1995 to complement the Messier catalog, listing 109 bright star clusters, nebulae, and galaxies named C1 to C109. This is a list of deep-sky objects of interest to amateur astronomy and not a catalog in the professional science sense. Other deep-sky observing lists for amateur astronomers ...
GSC — Guide Star Catalog. GSC2 / GSC II — Guide Star Catalog II; GSPC — Guide Star Photometric Catalog. GSPC2 — Guide Star Photometric Catalog, 2nd; Gsh — J. Glaisher (double stars) GΣ — G. Struve (double stars) Gtb — K. Gottlieb (double stars) Gui — J. Guillaume (double stars) Gum — Gum catalog of emission nebulae
A Messier marathon is an attempt, usually organized by amateur astronomers, to find as many Messier objects as possible during one night. The Messier catalogue was compiled by French astronomer Charles Messier during the late 18th century and consists of 110 relatively bright deep-sky objects (galaxies, nebulae, and star clusters).
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The M96 Group is located physically near the Leo Triplet. [10] These two groups may actually be separate parts of a much larger group, [ 10 ] and some group identification algorithms actually identify the Leo Triplet as part of the M96 Group.