Download URL | Author URL | Software URL
Almanac gives you the capability to determine the times of rising, setting, and meridian transit for the sun, the moon, and the planets. It also enables you to calculate the beginning and ending of astronomical, nautical, and civil twilight. The results of the calculations are formatted and written into a text editor. You can perform all common editing functions and save the data as a text file.
The formulae used in Almanac assume an ideal horizon where the intersection of the sky with the apparent plane of the earth's surface at the observer is the horizon. For rise/set calculations, the observer has zero elevation so that the horizon is exactly 90 degrees from the local vertical. Refraction of light passing through the earth's atmosphere tends to make objects appear higher in the sky than they actually are. This effect increases as an object's altitude decreases. Almanac assumes average atmospheric conditions in compensating for refraction. Lunar parallax changes the perceived altit
A stunningly beautiful, useful, and educational 3D screensaver, featuring the Moon, and allowing you see the current phase of the moon and the phases of the moon over the coming da ...
In the last ten years astronomers have discovered over 150 planets beyond our own solar system. Planet Quest is our artistic vision of what these worlds might look like, using the ...
SimSolar - Solar System Simulator for Windows. Includes easy-to-use display and controls, tilt and rotation options for easy viewing, options for scaled planet and orbit sizes, and ...
Sky Mandala is a meditative screensaver with a clock. It’ll give you a sense of focus and relaxation as you’ll be looking at the endless circle of life with the sun and the moon fl ...
Shiny Clock shows the palms of a man holding a shining bulb of a clock against the dark sky. The stars above are twinkling invitingly. The screensaver is a nice way to personalize ...