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Free Star Charts - Free Astronomy charts, latest night sky news, in-depth constellation guides and more.
Observers guides to the Messier Catalogue of Deep Sky Objects - Free Star Charts.
Observers guides to the New General Catalogue of Nebulae and Clusters of Stars (NGC) - Free Star Charts.
Observers guides to the 88 constellations of the night sky - Free Star Charts.
Located 321 light-years from Earth, Acrux is a multiple star system of at least 3 or maybe 4 stars. The two main components, a1 (mag. +1.40) and a2 (mag. +2.09), are the only stars of the system that are visually distinguishable.
Our aim is to promote Astronomy for all by providing information, articles, charts for anyone who wants to learn more about the stars, galaxies, the Sun, the planets, moon, asteroids, comets and whatever may be out there.
Planisphere. A star chart that's used to display what stars are visible at a specific time and date from certain latitude. It consists of two circular layers. The bottom layer contains a print out of the stars and constellations and the top layer has a transparent section.
M45, commonly known as the Pleiades or Seven Sisters, is the finest open cluster in the sky. It's a breathtaking site, known since antiquity and easily visible to the naked eye.
With at least 100 billion galaxies in the Universe the total number of stars in the Universe is enormous, almost unimaginable. In this section we list some of the more famous, unusual and historical significant stars / star groupings of interest to amateur astronomers.
Canopus is a brilliant star in the southern constellation of Carina and the second brightest in the night sky. At magnitude -0.72, it's about half as bright as Sirius but appearances can be deceptive; Canopus is far