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Links
Atomic clock
Info on objects
SOHO data - current sun images
SolarMonitor - further SOHO-images
Simbad - database, see also How to work with the SIMBAD: Query by criteria
calsky.com - The most complete online-calculator for atronomical observations
Planetarium
Atomic data
Atomic Data for Resonance Absorption Lines. III. Wavelengths Longward of the Lyman Limit for the Elements Hydrogen to Gallium (Data Table)
Astronomical catalogs
Site | Comments |
---|---|
Wikipedia | List of astronomical catalogues |
New General Catalogue (NGC) | Catalog of nebula, star clusters, and galaxies |
Messier catalog | List of 110 astronomical objects, mainly galaxies, star clusters, and nebula |
Hipparcos catalog | High-precision star catalogue |
Manufacturer
More interesting links
Astronomy Picture of the Day - Every day an interesting astrophysical image
Hipparcos - Astrometric space mission
VizieR - The most significant astronomical database
Staralt - Tool to determine the observability of objects
exoplanet.eu - Catalog of extrasolar planets
Gazetteer of Planetary Nomenclature - Information about the objects of our solar system