J. G.'s GeoAstro Applet Collection Interactive Java applets (JARS Top Rated!) display the position of the sun and the moon on the horizon for any date, time and location, and on a world map with day and night regions. The times of rise and setting, the declination, the Greenwich hour angle and the equation of time are computed ... www.jgiesen.de/GeoAstro/GeoAstro.htmreviews
STD Aurora Monitor Software Homepage Advanced Auroral Activity and Space Weather Monitoring Software *NEW* Software: SWIM - The World's Most Advanced Space Weather Software System Monitor your local weather (cloud) conditions and solar activity as well ! All in real-time ! *NEW*: Read the Sky & Telescope Magazine Review of the old Version 2.0 STD Aurora Monitor Software Download the Trial Version Now Available on CD-ROM ORDER FORM ... solar.spacew.com/aurora/reviews
StarTrak home page Freeware for Psion handhelds to help you find and track objects of the night sky. Well suited to Dobsonians. www.startrak.co.uk/reviews
SkySight SkySight UPDATE! 11 April 2001 You've waited... you've pondered... you've wondered: when will SkySight be released Wait no longer SkySight is here! After more than a year since our original announcement, Southern Stars Systems is releasing the current version of SkySight as a free public beta. We haven't yet implemented all of the features we'd have liked, and there are still a few kinks that ... www.southernstars.com/skysight/index.htmlreviews
Epoch_2000, Temporal Epoch Calculator by James Q. Jacobs Download an Excel spreadsheet to calculate temporal variation in astronomic "constants, " obliquity of the ecliptic and illumination angles at specified latitudes. www.jqjacobs.net/astro/epoch_2000.htmlreviews