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2. List of astronomical catalogues - Wikipedia

   en.wikipedia.org/.../List_of_astronomical_catalogues

   1RXS — ROSAT All-Sky Bright Source Catalogue, ROSAT All-Sky Survey Faint Source Catalog. 1SWASP — SuperWASP. 2A — see 1A. 2C — Second Cambridge Catalogue of Radio Sources. 2E — The Einstein Observatory Soft X-ray Source List. 2MASS — Two Micron All Sky Survey. 2MASP — Two Micron All Sky Survey, Prototype.

3. Principal Galaxies Catalogue - Wikipedia

   en.wikipedia.org/wiki/Principal_Galaxies_Catalogue

   The Principal Galaxies Catalogue ( PGC) is an astronomical catalog published in 1989 that lists B1950 and J2000 equatorial coordinates and cross-identifications for 73,197 galaxies. It is based on the Lyon-Meudon Extragalactic Database (LEDA), which was originally started in 1983. [2] 40,932 coordinates (56%) have standard deviations smaller ...

4. Abell catalogue - Wikipedia

   en.wikipedia.org/wiki/Abell_catalogue

   The Abell catalog of rich clusters of galaxies is an all-sky catalog of 4,073 rich galaxy clusters of nominal redshift z ≤ 0.2. This catalog supplements a revision of George O. Abell 's original "Northern Survey" of 1958, which had only 2,712 clusters, with a further 1,361 clusters – the "Southern Survey" of 1989, published after Abell's ...

5. Whole Earth Catalog - Wikipedia

   en.wikipedia.org/wiki/Whole_Earth_Catalog

   The Fall 1969 issue of the Whole Earth Catalog. The Whole Earth Catalog ( WEC) was an American counterculture magazine and product catalog published by Stewart Brand several times a year between 1968 and 1972, and occasionally thereafter, until 1998. The magazine featured essays and articles, but was primarily focused on product reviews.

6. Online public access catalog - Wikipedia

   en.wikipedia.org/wiki/Online_public_access_catalog

   Online public access catalog. The online public access catalog ( OPAC ), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.

7. Henry Draper Catalogue - Wikipedia

   en.wikipedia.org/wiki/Henry_Draper_Catalogue

   The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts ...