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Johannesburg Centre,
Astronomical Society of Southern Africa
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Web Between the Worlds
It's almost time to compile a Christmas gimme list. Here is a
decent telescope buyers' FAQ (Frequently Asked Questions) list to help you with yours. I
recommend it to all first-time buyers.
http://home.earthlink.net/~hakaida/index.html Even if you don't use Mathematica, Wolfram Research's website is a useful resource. Take a look at the following pages. http://scienceworld.wolfram.com/ NASA's Planetary Photo-journal offers a staggering amount of really great pictures of the Solar System. http://photojournal.jpl.nasa.gov/ Cartes du Ciel is a nice free sky charting programs. It supports a decent variety of catalogues. Version 2.75 is available at: http://www.stargazing.net/astropc/ Richard Fleet has written a sky chart program to show when the best time to view objects in the sky at any time of the year, and from any location in the world. GraphDark allows you to work out when an astronomical object will be visible from your location and when moonlight, twilight or low haze will affect its visibility. An additional option displays the moon’s phases as a lunar calendar. Typical uses might be planning a series of observing sessions for deep sky objects so that moonlight can be avoided, working out when a comet will be visible from your location at a reasonable altitude, or when a variable star will be visible. http://www.naas.btinternet.co.uk/ Clear skies! |
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