Also, Guide provides excellent planetarium features, showing the positions and appearances of all nine planets, the Sun, Moon, four moons of Jupiter, most other major satellites of planets, comets, and asteroids, all at precisions of about an arcsecond or better. Perhaps, if cable modems and similar high-speed connections become common, that situation will change. But at present, it's not possible. The lack of a demo admittedly makes it harder for prospective users to evaluate the software. To evade this handicap, an effort is made to make these Web pages as descriptive as possible.
Screen shots are available on the site.
Sample printouts are available, by postal mail, on request. Furthermore, a 30-day unconditional guarantee is provided. Returns are sufficiently rare that this method apparently works quite well. One must absolutely have a CD-ROM drive and a VGA or better display. A mouse is recommended for the DOS software, and is essential for the Windows software.