They were sometimes accompanied by a star chart for illustration. Star catalogues were compiled by many different ancient people, including the Babylonians, Greeks, Chinese, Persians, and Arabs. 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. In astronomy, many stars are referred to simply by catalogue numbers. The Cambridge Star Atlas (3rd edition to 6.5 mag), Uranometria 2000.0 (2nd edition to 9.7 mag), the Bright Star Atlas 2000.0 (to 6.5 mag), and the Pocket Sky Atlas (to 7.6 mag).There are, however, billions of stars resolvable by telescopes, so this is an impossible goal with this kind of catalog, an attempt is generally made to get every star brighter than a given magnitude. These include Sky Atlas 2000.0 (2nd edition to 8.5 mag), Other major celestial atlases since 1997 have also incorporated the Hipparcos and Tycho Catalogue data. Many thousands of already known and newly discoveredĭouble stars are depicted with tick marks indicating separation and position angle. Variable stars are indicated by amplitude and variability type. Proper motion arrows are given for stars with motions exceeding 0.2 arcsec/yr. Distance labels are given for stars within 200 light-years of the Sun. Star magnitudes are essentially Johnson V.
The chart scale is 100 arcsec/mm, matching that at the focus of an 8-inch f/10 Schmidt-Cassegrain. The non-stellar objects in the atlas are identified by type and designation. The 1548 charts include one million stars from the Hipparcos and Tycho-1 Catalogues, three times as many as in any previous all-sky atlas more than 8000 galaxies with their orientation outlines of many bright and dark nebulae the location of many open and globular clusters and some 250 of the brightest quasars. It appeared as a stand-alone publication, Īnd as three volumes of the 17-volume Hipparcos Catalogue. This 1997 work was the first sky atlas to include the Hipparcos and Tycho Catalogue data, extending earlier undertakings in terms of completeness and uniformity to a magnitude limit of around 10–11 magnitude. The Millennium Star Atlas was constructed as a collaboration betweenĪ team at Sky & Telescope led by Roger Sinnott, and the European Space Agency's Hipparcos project, led by Michael Perryman.
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