M
Mel
========================================================================I am looking for some advice on what astronomical is available for my
needs. It needs to be free!
I'm looking for a basic package to show the predicted path of the
main celestial bodies (sun and moon and the biggest stars) throughout
any day of the year.
I also need to be able to read off azimuth and elevation for a given
day so that I can then work out which hours of that day I'll be able
to see the sun.
Also useful are times of civil and astronomical twilight.
Plots a graph showing the variations in day length through the year,
Sunrise and Sunset times, Longest and Shortest days etc for any latitude
and longitude. It includes facilities to save configurations for
different locations.
http://www.gwnt00030.pwp.blueyonder.co.uk/uklife/gdys.htm
Download:
http://www.gwnt00030.pwp.blueyonder.co.uk/uklife/sun32.zip
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This program calculates sunrise, sunset and twilight times for locations
worldwide. Once you set your location, you can hover your mouse over the
sun icon in the taskbar to get some basic sunrise and sunset information
or you can click on the icon to get more detailed information. The
program uses formulas which are accurate year-round to within a few
minutes for all states except Alaska. Even in Alaska it is generally
accurate to within five minutes.
In addition to calculating sunrise and sunset times, the program
calculates three different twilight times: civil, nautical and
astronomical. Also calculated is how much daylight and total usable
light there will be for the current day.
http://www.sunrisesunset.com/sun.html
Download:
http://www.sunrisesunset.com/download/sun.zip
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