Star chart astronomy2/24/2023 ![]() ![]() Experiment by downloading a few free ones to compare. There are many available for both Android and IOS. Some may connect with a small telescope that can then be controlled by your mobile device. Good apps include features such as being able to point your device to the sky and identify stars, planets and constellations. AppsĪpps can be downloaded on Apple and Android phones. Stellarium is free and is updated with new features and objects. Software can show the sky at any given moment and can offer other features like 3d maps of planets or ability to change location or time etc. To find the stars available on 4th September at 10pm you would move the hour dial that says 10pm on the overlay next to the date on the underlay and point the planisphere north to see a representation of the stars available in the sky at that time. The two discs are fixed at the pole axis (so Polaris is not shown). The ecliptic is a line through which the Sun and planets appear to move, and cuts through constellations known as the Zodiac. The edge of the round area represents the horizon. Around the edges are equally spaced days of the year. On the underneath disc is a star map showing every constellation available for viewing from a general location e.g. On one of them is a hole so that a portion of the disc underneath can be seen. It consists of two discs fastened to each other. PlanisphereĪ planisphere is a quick and easy way to find out what stars are viewable at any time. ![]() ![]() Some maps are equatorial with the northern constellations stretched. On star maps, brighter stars appear as a larger dot and smaller stars as a smaller dot. Frequently there are two maps, one showing the view of east to west towards the south, the other showing the view of west to east towards the north. They tend to show what is in the sky during a month or season. Star maps and charts are published in books, newspapers and magazines. Charts, Planispheres, Apps & Software 6.5 - Be able to use information from star charts, planispheres, computer programs or ‘apps’ to identify objects in the night sky Star maps and charts ![]()
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