This is a viewer of night sky map websiteSKY-MAP.org(http://www.sky-map.org/). By using tablet, twoscreensare available to see sky map. You can use them to see zoomandoverall viewing. This app has following functions:
Search location of constellation, Messier and NGC catalogandplanets
Show pictures of them(except planets)
Show wikipedia(except NGC catalog)
This app receive huge data from sky-map.org. So I recomend touseWiFi instead of 3G