A personal computer running Windows Vista™ (any 32-bit Edition), Windows XP™ (any Edition), Windows 98™, Windows Me™, Windows NT™ or Windows 2000™. Note that camera control under Vista 64-bit Editions is not supported until camera manufacturers release Vista 64-bit compatible camera device drivers.
500 MHz processor or faster recommended.
A display capable of displaying 256 colors or more.
A CD-ROM drive.
64 MB RAM. 128 MB or more is recommended (for processing larger CCD images).
60 megabytes (minimum) of free hard disk space.
or,
TheSky Version 5 Level IV