Kstars

KStars is a Desktop Planetarium for KDE.I live in Bangalore and hence I have configured Kstars for this location.I just open the program , see the sky map and then go to the terrace of my building to watch the sky.Its wonderfully acurate.If you have a laptop you can just carry the system up and see the performance of this software.Its FREE and most of the linux distributions come with this package.Modern telescopes also can be connected to this software for go-to facility though i have not tried it yet!