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Website: http://www.ipac.caltech.edu/2mass/

Observations for the Two Micron All-Sky Survey (2MASS) began in 1997 and were completed in 2001 at two telescopes located one each in the northern and southern hemispheres to ensure coverage of the entire sky. The most ambitious project to map the night sky to date, the final (post-processing) data release for 2MASS occurred in 2003. The whole sky was covered using photometric system of three infrared wavebands around 2 micrometres (m): J (1.25 m), H (1.65 m), and Ks (2.17 m). More information...

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  • A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name. The original list of Bayer designations contained 1,564 stars. Most of the brighter stars were assigned their first systematic names by the German astronomer Johann Bayer in 1603, in his star atlas Uranometria (named after Urania, the Greek Muse of Astronomy, along with Uranus, the Greek god of the sky and heavens).
    http://commons.wikipedia.org/wiki/File:Orion_constellation_map.png
  • Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek letters. Each star is assigned a number and the Latin genitive of the constellation it lies in (see List of constellations for a list of constellations and the genitive forms of their names). Flamsteed designation contained 2554 stars.
  • The Messier objects are a set of astronomical objects first listed by French astronomer Charles Messier for 1774 (published in 1771). The original motivation of the catalogue was that Messier was a comet hunter, and was frustrated by objects which resembled but were not comets. He therefore compiled a list of these objects, in collaboration with his assistant Pierre Méchain. The first edition covered 45 objects numbered M1 to M45.
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  • A star catalogue, or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient peoples, including the Babylonians, Greeks, Chinese, Persians and Arabs.
  • The New General Catalogue (NGC) is a well-known catalogue of deep sky objects in astronomy. It contains 7,840 objects, known as the NGC objects. The NGC is one of the largest comprehensive catalogues, as it includes all types of deep space objects and is not confined to, for example, galaxies. The catalogue was compiled in the 1880s by J. L. E. Dreyer using observations mostly from William Herschel and his son John, for total of 7,840 objects.
    http://commons.wikipedia.org/wiki/File:Ngc.galaxy.arp.750pix.jpg
  • The Index Catalogue (IC) —also known as the Index Catalogue of Nebulae, the Index Catalogue of Nebulae and Clusters of Stars, IC I, or IC II— is a catalogue of galaxies, nebulae and star clusters that serves as a supplement to the New General Catalogue. It was first published in 1895, and has been expanded to list 5,387 objects, known as the IC objects. The catalogue was compiled by J. L. E.
  • The Messier objects are a set of astronomical objects catalogued by the French astronomer Charles Messier in his "Catalogue des Nébuleuses et des Amas d'Étoiles" ("Catalogue of Nebulae and Star Clusters"), originally published in 1771, with the last addition (based on Messier's observations) made in 1966. Because Messier was interested in finding only comets, he created a list of non-comet objects that frustrated his hunt for them.
    http://commons.wikipedia.org/wiki/File:Messier_10_Hubble_WikiSky.jpg
  • The Catalogue of Galaxies and of Clusters of Galaxies (CGCG) was compiled by Fritz Zwicky in 1961–68, and contains 9134 galaxy clusters.
  • The Digitized Sky Survey (DSS) is a digital version of several photographic atlases of the night sky, and an ongoing project to produce more digital versions of photographic astronomical datasets.
  • The Revised New General Catalogue (RNGC) and companion Revised Index Catalogue (RIC) is a revision to the original New General Catalogue and Index Catalogues made by J. L. E. Dreyer. Some of the brightnesses of objects measured by Dreyer were not accurate or the description of the object was not accurate. Therefore they were revised. Most planetarium computer programs use the RNGC and the RIC as a source for their Deep sky object dataset. It was compiled by Jack W. Sulentic and W.G.

 

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