When you go outside at night, use the large maps in the special red night vision mode to find the object and start observing.Īd Astra covers both the northern and southern skies. If you like an object, just press the + sign next to it to add to your personal observation list. All within reach of amateur telescopes and in a lot of cases, also viewable in binoculars. The star atlas and skyguide that makes it really easy to pick the best objects, make your own observation list and use it when you are outside.Īd Astra contains detailed maps of all 88 constellations, and descriptions of thousands of objects: star clusters, planetary nebulae, galaxies, double stars and variable stars. The images below are from an updated version published in 1795, titled Atlas Céleste de Flamstéed, produced by Mechain and Lalande, with new constellations and many more nebulae.An essential tool for every astronomer. The names of the constellations are in French (not in Latin) and included some nebulae discovered after the death of Flamsteed. The new version, called Atlas Fortin-Flamsteed, was a third of the size of the original and also had artistic retouching to some illustrations (mostly Andromeda, Virgo and Aquarius). The changes in the positions of stars (the original observations were made in the 1690s), led to an update made in the 1770s by the French engineer Nicolas Fortin, supervised by the astronomers Le Monnier and Messier from the Royal Academy of Sciences in Paris. In 1729, ten years after his death, a star atlas based on observations he made, the Atlas Coelestis, was published by his widow, assisted by Joseph Crosthwait and Abraham Sharp. He catalogued over 3000 stars and was responsible for several of the earliest recorded sightings of the planet Uranus, which he mistook for a star and catalogued as '34 Tauri'. John Flamsteed (1646-1719) was an English astronomer and the first Astronomer Royal.
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