![]() In other words, how do we describe the size of something like the Great Square of Pegasus? It makes no sense to say that the Great Square is so many inches or feet or miles wide.įor millennia, astronomers have solved this problem by measuring apparent sizes and distances on the sky in terms of degrees. It can be difficult to get your bearings when looking at the sky, and one of the main problems is coming to terms with the scale of the sky. And from the star Scheat (Arabic for “upper arm”) the two front legs of Pegasus extend up and to the right. ![]() Pegasus is upside down at this time of year, but you should be able to follow the graceful curve of his neck, ending with the star Enid, or “nose” in Arabic. On September evenings, The Great Square appears balanced on one corner, looking like a huge, slightly lopsided, diamond shape in the sky. This large asterism (unofficial star pattern) is the body of Pegasus, the Winged Horse. When you look to the East on September evenings, it’s difficult to miss the Great Square. Submit a Copyright Permission Form if the intended use involves publication or commercial use.Advertisement Just click here or on the image below to open the printable map-then bring outside! Make and distribute up to 300 printed handouts of The Evening Sky Map each month without written permission (subject to Terms of Use). Receive news of updated sky maps, reminders of Sky Calendar events, and other noteworthy news for sky watchers. Choose from existing designs or request custom-made maps to meet your specific requirements. Many of the books have received excellent reviews in Astronomy magazines, but, more importantly, all the books and products are highly rated by skywatchers like you.Īt we create quality, digital sky maps (star charts) for publication, education and other commercial applications. The store includes only the best Astronomy books and products - most at discount prices. Whatever your interest the interest, the store has something for everyone. Or maybe you simply want a great beginner's guide. Want to learn more about the night sky? Perhaps you are looking for a set of fine star charts or wish to learn more about the amazing celestial objects you can see from your own backyard. However, any use of a commercial nature, including publication of The Evening Sky Map, requires the prior written permission of the copyright owner for which a Copyright Permission Form must be submitted. Written permission is NOT required provided distributors comply with the Terms of Use. encourages Astronomy Education Groups and Individual Users to freely distribute printed handouts of The Evening Sky Map for non-commercial educational use.
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