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 altitude of the moon because the observer is not at the center of the earth. Parallax makes that the moon appears lower in the sky. Almanac compensates for this effect. Parallax for the Sun and planets is small enought to be ignored for this application.
VERSION HISTORY
- Version 1.1 posted on 2013-06-22
not applicable
Program Details
- Category: Home & Hobby > Astronomy
- Publisher: Abecedarical Systems
- License: Free
- Price: N/A
- Version: 1.1
- Platform: windows
EULA
Shareware License Agreement This is a legal agreement between you, the "end user," and Stephen R. Schmitt, the author. Use of this software (the "SOFTWARE") indicates your acceptance of these terms. 1. GRANT OF LICENSE. Stephen R. Schmitt hereby grants you the right to use the SOFTWARE on a single computer. The SOFTWARE is considered in use on a computer when it is loaded into temporary memory or installed into permanent memory. 2. PROPRIETARY RIGHTS. The SOFTWARE is owned exclusively by Stephen R. Schmitt, and this license does not transfer any ownership of the SOFTWARE to you. 3. NON PERMITTED USES. You may not translate, reverse program, disassemble, decompile or otherwise reverse engineer the SOFTWARE. 4. NO WARRANTY. THIS SOFTWARE IS LICENSED TO YOU "AS IS," AND WITHOUT ANY WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. STEPHEN R. SCHMITT DOES NOT WARRANT THAT THIS SOFTWARE DOES NOT INFRINGE ANY RIGHTS OF THIRD PARTIES. 5. Limitation of Liability. In no event shall Stephen R. Schmitt's liability related to any of the SOFTWARE exceed the license fees, if any, actually paid by you for the SOFTWARE. Stephen R. Schmitt shall not be liable for any damages whatsoever arising out of or related to the use of or inability to use the SOFTWARE, including but not limited to direct, indirect, special, incidental, or consequential damages.