Astronomical Societies and Institutes
- International Astronomical Union (IAU)
- European Astronomical Society (EAS)
- American Astronomical Society (AAS)
- Astronomical Society of the Pacific (ASP)
- Astronomische Gesellschaft (AG)
- European Southern Observatory (ESO) Garching
- Space Telescope - European Coordinating Facility (ST-ECF) Garching
- ESA Science Projects
- Space Telescope Science Institute (STScI) Baltimore
- Calar Alto Observatory
- Centre de Données Astronomiques (CDS) Strasbourg
- Cerro Tololo Interamerican Observatory (CTIO)
- Mauna Kea Observatories
- Anglo-Australian Observatory
- Mt. Stromlo and Siding Spring Observatories
- Roque de los Muchachos Observatory La Palma
- Kitt Peak National Observatory (KPNO)
- Multiple Mirror Telescope (MMT) Observatory Mt. Hopkins
- Jet Propulsion Laboratory (JPL) Pasadena
- Apache Point Observatory (APO)
- McDonald Observatory Mt. Locke
- Lick Observatory Mt. Hamilton
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