The StellarMate Plus Manual
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In the Catalogs page, you can configure which object catalogs are displayed
by KStars, as well as how much information you would like to be included on the
Sky Map. By default, KStars includes ~300,000 named and unnamed stars up to
magnitude 8. For Deep Sky Objects, the included catalogs are New General
Catalog (“NGC”), Index Catalog (“IC”), and Messier Catalog.
New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is
a catalogue of 7,840 deep-sky objects.
Index Catalogue of Nebulae and Clusters of Stars (abbreviated as IC) serves as a
supplement to the NGC, and contains an additional 5,386 objects, collectively
known as the IC objects.
Messier Catalogue is a catalogue of 110 deep-sky objects, including diffuse
nebulae, planetary nebulae, open clusters, globular clusters and galaxies. Messier
objects have names like M1, M2, up to M110. The maximum apparent visual
magnitude of Messier Catalogue is represented by M91's value of 10.2.
You can install new catalogues using KStars “Add-On Installer”. You can open it
by opening the Data →Download New Data...submenu. You can choose from a
list of catalogues, including: