DE STERRENHEMEL

WAT ER AAN DE HEMEL IS TE ZIEN

• Sterrenhemel
• Sterrenkunde.nl: De sterrenhemel vandaag
• Hemelverschijnselen (Volkssterrenwacht Bussloo)
• Sky & Telescope: This Week's Sky at a Glance
• Night Sky Info
• Eagle's Eye on the Sky
• Heavens Above
• AstroImage

ZON EN MAAN

• Zoncalculator: opkomst, ondergang en de verschilende soorten schemeringstijden
• Stichting 'De Koepel': Sterrenkundige calculator
• In welke richting staat de zon of de maan, en hoe hoog staat deze?
• Sunrise/Sunset/Twilight and Moonrise/Moonset
• Earth's seasons, Equinoxes, Solstices, Perihelion and Aphelion 2000-2020
• International Earth Rotation & Reference Systems Service
• Earth's Orientation and Earth's Rotation
• Phases of the Moon (1700-2035)
• Moonphases for the years 1700 up to 2199
• Virtual Reality Moon Phase Pictures: 1800-2199
• Find moonrise, moonset and moonphase for a location
• The Sun/Moon Calculator
• Moon Tool for Windows
• The Hitchhiker's Guide to the Moon
• Moon Calendar
• What's a Blue Moon?
• Wikipedia: Blue Moon

KALENDER

• Calender Zone

ZONS- EN MAANSVERDUISTERINGEN

• NASA Eclipse Web Site
• Eclipses of the Sun and Moon

OVERGANGEN

• Planetary Transits Across The Sun
• 2004 and 2012 Transits of Venus

BEDEKKINGEN

• Dutch Occultation Association
• International Occultation Timing Association Home Page
• Occultations by Solar System Objects
• Asteroid Occultation Section of IOTA
• Asteroid Occultation Updates
• European Asteroidal Occultation Results
• Occultations by Asteroids

METEOREN

• International Meteor Organization
• American Meteor Society
• Dutch Meteor Society

KOMETEN

• Nederlandse Kometen Vereniging
• Skyhound's Comets this Month
• BAA Comet Section Home Page

EFEMERIDEN EN BEREKENINGEN

• MICA Multiyear Interactive Computer Almanac
• Ancient Luni-Solar and Planetary Ephemerides
• Astronomical Calculations
• Ephemerides server of the Bureau des Longitudes
• JPL's Solar System Dynamics WWW site
• Satellite Situation Center
• The Distant Artificial Satellites Observation Page
• Computing planetary positions - a tutorial with worked examples

DE TIJD

• The Official U.S. Time
• What Time Is It?
• Local Times Around the World
• World Time Zones
• De wettelijke tijdregeling in Nederland (met een overzicht van de zomertijden vanaf de invoering in 1916)
• De Islamitische tijdrekening (met tabellen van 2000 tot 2010)

VERANDERLIJKE STERREN

• VSNET: Variable Star Network Home Page
• Minima van Algol
• International Supernovae Network

DUBBELSTERREN

Double Star Club Observing List
• Double Stars To Follow

SATELLIETEN

• Visual Satellite Observer's Home Page
• The High Altitude Satellite Observers Home Page
• Heavens Above
• SpaceOnLine
• CelesTrak WWW (Twee-lijns baanelementen satellieten)

STERRENBEELDEN, STERRENKAARTEN, CATALOGI

• Kuuke's sterrenbeelden
• MWO Online StarMap
• The Constellations and their Stars
• Windows on the Universe: Constellations
• The Constellations
• The Mythology of the Constellations
• The Web Nebulae by Bill Arnett
• The Messier Catalog
• A Messier Gallery
• ESO Online Digitized Sky Survey
• Star Journey

VARIA

• Estimating Limiting Magnitude
• Determining Brightness using the Magnitude System

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