Browse 10 Astronomy Tools
Astronomy and space tools including constellation finder, planet tracker, astronomy events, telescope calculations, and sky viewing utilities.
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Astronomical Distance Calculator
Convert cosmic distances between astronomical units (AU), light-years, parsecs, and kilometers. Calculate travel times and understand scale comparisons for space missions and stellar measurements.
Astronomy Events Calendar
Track upcoming astronomical events including meteor showers, eclipses, conjunctions, and other celestial phenomena.
Astrophotography Calculator
Calculate optimal camera settings for astrophotography using the 500 Rule and NPF Rule. Get exposure times, ISO recommendations, and image stacking calculations for perfect star photos without trailing.
Constellation Finder
Discover the 88 IAU constellations with mythology, bright stars, best viewing times, and deep-sky objects. Interactive constellation database for learning the night sky and planning stargazing sessions.
Day/Night Length Calculator
Calculate the length of daylight, night, and twilight periods for any location and date. Track seasonal changes in day/night duration.
Moon Phases
Track current moon phase, illumination percentage, moonrise and moonset times. View upcoming moon phases and lunar calendar.
Planet Tracker
Track the position and visibility of planets in our solar system. Find out when and where to see Mars, Venus, Jupiter, Saturn and more.
Sky Viewer
View the night sky with stars, constellations, and celestial objects from your location. Interactive star map for stargazing and astronomy.
Sun Calculator
Calculate sunrise, sunset, solar noon, twilight times, and day length for any location and date. Free online sun position and daylight calculator.
Telescope FOV Calculator
Calculate telescope field of view, magnification, and image scale for eyepieces and cameras. Determine what celestial objects will fit in your view for optimal visual observing and astrophotography.