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--- en:documentation:installation_of_extra_catalogs [2016/03/16 10:24] – [USNO-A2.0] pch
+++ en:documentation:installation_of_extra_catalogs [2020/04/07 19:51] (current) – [Activation of the catalogs] pch
@@ Line 15: / Line 15: @@
 |cdc additional stars catalog| This add the following star catalog:\\ **Tycho-2** star catalog, containing data about 2.5 million stars to magnitude 11.\\ **WDS** the Washington Double Star Catalog, contains data of astrometric multiple star systems.\\ **GCVS** variable stars catalog with information about all kinds of variable stars. You can find here eruptive, pulsating, rotating, cataclysmic, eclipsing, intense variable X-ray stars and other types further subdivided in this one catalog.\\ **Search Index** for SAO, BD, HD, GC star number. | cat/tycho2 \\ cat/gcvs \\ cat/wds |total \\ 85 MB|
 | UCAC 4 catalog | This add the following star catalog:\\ **UCAC 4** star catalog, include 113 millions stars to magnitude 16. Read more information [[en:news:ucac4_catalog|here]] | cat/ucac4 |total \\ 5.9 GB|
+| GAIA DR2 | This add the following star catalog:\\ **GAIA DR2** star catalog, include up to 1.7 billion stars to magnitude 21. Many version available with different content and limiting magnitude to limit the download size. This require you use a version of Skychart higher than 4.1.1-3736. Read more information [[en:news:gaia_dr2|here]] | cat/gaia |total \\ 300 MB to 45 GB|
 |cdc additional nebulae catalog|A group of catalogs of Deep Sky Objects. \\ **GCM**: Globular Clusters in the Milky Way (Harris, 1999) contains data of 147 globular clusters close to our Milky Way. \\ **GPN**: Catalogue of Galactic Planetary Nebulae (Acker+, 1992). 1143 proven and probable planetary nebulae, and 347 possible planetary nebulae. \\ **LBN**: Lynds' Catalogue of Bright Nebulae (Lynds 1965). Also contains a cross-reference to NGC, Index Catalogue (IC), Sharpless (1959) Catalogue of HII regions, Cederblad (1956) Catalogue of Diffuse Galactic Nebulae, and Dorschner and Gurtler (1963).\\ **NGC2000**: This is a modernized collection of the New General Catalogue of Nebulae and Clusters of Stars (NGC), the Index Catalogue (IC), and the Second Index Catalogue composed by J. L. E. Dreyer (1888, 1895, 1908). Contains 13.226 Deep Sky objects, equinox B2000.0  \\ **OCL**: The fifth edition of the Lund Catalogue of Open Cluster Data, provides key information about all known open clusters in our Milky Way. \\ **PGC** Catalogue of Principal Galaxies, extract from the 2012 Hyperleda database, contains data about 1.5 million galaxies. | cat/gcm \\ cat/gpn \\ cat/lbn \\ cat/ngc2000 \\ cat/ocl \\ cat/pgc |total \\ 174 MB|
 |cdc_rngc_catalog.zip|By Wolfgang Steinicke reviewed and by **[[http://x.astrogeek.org/software/cdc/catalog.php|Jeff Burton]]** for //Cartes du Ciel-SkyChart// adapted list of NGC and IC objects, originally composed by Dreyer. Contains exactly data about 14.000 Deep Sky objects. Equinox here is 2000.0, this version dates from november 24th 2002. Activate this catalog in the first tab of the **[[catalog|catalog settings]]** dialog box by setting the path to the ".hdr" file.|cat/RNGC|2,54 MB|
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 ===== Activation of the catalogs =====
-You can activate or deactivate your catalogs with the dialog boxes from **Setup -> [[Catalog|Catalog]]**. Click the appropriate tab for your specific catalog.
+You can activate or deactivate your catalogs with the dialog boxes from **Setup -> [[Catalog|Catalog]]**. Click the appropriate tab for your specific catalog. \\
+Some catalog are moved to the Obsolete tab as they are replaced by more recent data. So also look here if you not find them.
 \\
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 ===== The large catalogs =====
+Most of this catalog are now obsolete and replaced by GAIA DR2. \\
+For a new installation look for GAIA DR2 above.\\
+But you can still refer to this documentation if you already own one of this old catalog or if you have a specific reason to use them.
 ==== HST GSC original FITS ====