Devoted to stars in galactic open clusters. It offers an interface to a database collecting astronomical observations, and bibliography.
- SAO Telescope Data Center
Creates, and maintains software to process and archive data from optical telescopes at the Oak Ridge Observatory in Harvard, Massachusetts, Whipple Observatory, and Multiple Mirror Telescope on Mt. Hopkins in Arizona. The Smithsonian Astrophysical Observatory (SAO) is part of the Harvard- Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts.
- The UTR-2 Catalogue
Provides a low frequency sky survey of discrete sources obtained in the Institute of Radio Astronomy of the Ukrainian National Academy of Sciences. Images from the UTR-2 radio telescope at a number of the low frequencies used in contemporary radio astronomy within the range from 10 to 25 MHz.
- The Aladin Sky Atlas
Provides an interactive sky atlas allowing users to visualize digitized images of any part of the sky. Includes astronomical catalogs, personal user data files, and interactive access to related data from the Simbad database, and Vizier service.