SkyMap was released on Windows 8 store. It can be installed for free on any Windows 8 PC or tablet.
Here are a few instructions: - activate point to sky by pointing the tablet above your head (start the motion from under the horizon line) - compass sensor on some Windows8 tablets are not very accurate - we hope they'll be fixed by future driver updates; the sensor can be calibrated by switching the tablet from portrait to landscape mode - use Windows search and settings charms on sidebar interface to get more from SkyMap app (swipe from right side of the screen or move the mouse there) - click on a sky object to get details and click further on wikipedia link (for some of them)
SkyMap Free for Windows 8 can be found here: SkyMap Free for Windows 8
The latest update brings a completely new and modern graphics experience: a simulated virtual reality display of the night sky using a realistic Milky Way background and over 70 famous constellations drawings based on Johannes Hevelius’s work.
Click here for more details.