Sky Screen Saver for Windows Systems shows the sky above any location on Earth
The Sky Screen Saver shows the sky above any location on Earth, including stars (from the Yale Bright Star Catalogue of more than 9000 stars to the 7th magnitude), the Moon in its correct phase and position in the sky, and the position of the Sun and all the planets in the sky.
Outlines, boundaries, and names of constellations can be displayed, as well as names and Bayer/Flamsteed designations of stars brighter than a given threshold. A database of more than 500 deep-sky objects, including all the Messier objects and bright NGC objects can be plotted to a given magnitude. The ecliptic and celestial equator can be plotted, complete with co-ordinates.
To fulfill its mission as a screen saver, the sky map shifts position on the display every 10 minutes to avoid burning in those few components of the display which do not move as the Earth revolves.
The Sky Screen Saver is in the public domain. You can do anything you like with it.
Downloading and Installation
Several different versions of the Sky Screen Saver are available for different hardware and software configurations; download the one appropriate for your machine. After you've downloaded the program archive, extract the files in it with an un-zip utlity, archive extract program, and follow the instructions in the included README.TXT file to install, configure, and activate the screen saver on your system.
Recent 32-bit Systems (Windows XP and 2000)
Download 32-bit Sky Screen Saver version 3.1b
Read installation instructions
Older 32-bit Systems (Windows Me and 98)
Download 32-bit Sky Screen Saver version 3.0
Read installation instructions
Ancient 32-bit Systems (Windows 95 and Windows NT 3.x and 4.x)
Download 32-bit Sky Screen Saver version 2.1
Read installation instructions
Archaic 16-bit (Windows 3.x) Systems
Download 16-bit no math chip Sky Screen Saver version 1.1
Download 16-bit math chip Sky Screen Saver version 1.1 (Pentium, 486DX, 486SX/487, 386/387 systems only)
http://www.fourmilab.ch/skyscrsv/