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If you really zoom in on a planet, it will eventually show as a fairly realistic depiction of the world By tapping on a planet and pressing the Info icon, you can access data about it, including its apparent magnitude (brightness). This is a welcome change from most planetarium programs, which show all the planets at the same size. Planets are shown with their size corresponding to their brightness. Tapping on any object in the planetarium view will identify it by name or designation (for example, the star HD 113458), and then tapping the Info icon will reveal about it: alternate designations, celestial coordinates, visual magnitude, distance, and physical characteristics (which vary, depending on the nature of the object).
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(Comets are available as a $1.99 in-app purchase to the free Star Chart app I bought this add-on, to be presented with a paltry 17 comets, including ISON, and Halley, which won't be visible to observers again for several decades.)Īnother of SkySafari 3's strong points is the thoroughness of the information that it provides. SkySafari 3 has a healthy database of more than 200 comets, including currently visible objects such as Comets ISON and Lovejoy, while the standard StarMap version, as well as most basic planetarium programs, lacks comets altogether. SkySafari tracks more than 150 artificial satellites, while StarMap shows only one, the International Space Station. SkySafari 3 shows about 135 asteroids to StarMap's 50. The basic version of the StarMap app shows more and fainter stars, but fewer deep-sky objects. It shows about 120,000 stars down to fainter than magnitude 9 (about what I can see in binoculars under a suburban sky), with even fainter deep-sky objects (galaxies, star clusters, nebulae) charted. But even the basic version under review here shines brightly in the universe of astronomy apps.
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The Plus and Pro versions of SkySafari have progressively larger star and object databases.
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All three versions are also available as Android apps, as well desktop programs for Mac OS X. SkySafari 3 Plus ($14.99) and SkySafari Pro ($39.99) are geared to serious amateur astronomers, and let users control a telescope with GoTo functionality with them. It is the lowest priced of 3 similar programs from Southern Stars. SkySafari 3 works on the iPad, iPhone, and iPod touch I tested it on an iPad 2. Other lists include Comets, Asteroids, Satellites, Brightest Stars, Named Stars, Deep-Sky Objects, Constellations, and more. The first search list, Tonight's Best, shows many of the night's more impressive objects in a combined list that includes the Moon, planets, and many galaxies, nebulae, star clusters, and double stars. Objects below the horizon are grayed out by default, though you can set it so the area below the horizon is transparent (making the sky one continuous sphere) or translucent. The Search function contains stars, constellations, planets, deep-sky objects (galaxies, star clusters, nebulae) and more, in drop-down menus. Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. ( Read our editorial mission (Opens in a new window) & see how we test everything we review (Opens in a new window).) They are labeled Search, Info, Center, Settings, Time, Compass, Gyro, Night, SkyWeek, and Help. If you swipe the bar to the left, a few additional ones will appear. Along the bottom of the screen, when held in portrait orientation, is a bar with a row of labeled icons. Along the top are location (latitude and longitude) and date, as well as info about the sky view's scaling and the direction you're pointing. The app's depiction of the night sky rightfully fills nearly the whole screen. You can stretch the screen to zoom, or pinch it for a more wide-field view. This virtual planetarium's "dome" is the sky itself. It does so night or day, and whether it's cloudy or clear. SkySafari is what is known as a planetarium program, as it presents a depiction of the night sky in the direction you're holding your iPad. It combines an attractive interface, a wealth of features, a wide range of observable objects, and data on every object it shows. It's even more stunning when used on the larger screen of an iPad, and easily takes the Editors' Choice honor for use on that platform as well. I loved the astronomy app SkySafari 3 (for iPhone) enough to make it an Editors' Choice when I reviewed it in early 2013.
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