This alpha version is full of bug and many function of the version 2 are not include here.
Please do not fill the bug tracker at the moment!
Use this program only to have a preview of the version 3.
You can download the source code and pre-compiled binaries for Linux and Windows from http://sourceforge.net/projects/skychart/
The documentation about installing the software on Linux or Windows, or using the source code is in the documentation section.