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Grid lines representing latitude and longitude offer a structured layout, allowing us to identify stars and constellations. From professional astronomers to amateur stargazers, star maps are versatile tools that serve multiple purposes, including education and navigation.
Astronomical map, any cartographic representation of the stars, galaxies, or surfaces of the planets and the Moon. Modern maps of this kind are based on a coordinate system analogous to geographic latitude and longitude.
The reference frames we use on star charts are equivalent to longitude and latitude used on maps of the earth. They are called right ascension and declination respectively. The celestial equator mirrors Earth’s equator and the north and south celestial poles are directly above those on Earth.
Latitude – the lines that run around the Earth parallel to the Equator and give the north-south location – is called declination. Longitude – the lines that run up and down through the north and south poles and give the east-west location – is called right ascension.
Put simply, it takes the imaginary grid of latitude and longitude lines from Earth’s surface and projects them onto the sky, to create what is known as the celestial sphere.
To find where an object like a planet is in the sky, we need to use a star map. You can make starmaps for your location and time at Your Sky. But to find a planet's position at any chosen time (not necessarily the current month) we can find out the planet's CELESTIAL COORDINATES and plot its position on our own star map that we create ourselves.
25 Ιαν 2024 · There’s a diverse range of star charts, from simple sky maps that highlight major constellations to detailed charts used by pros to locate obscure celestial objects. Star charts can be geographic, denoting the night sky as viewed from specific locations.
