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Star Atlas
Tyr StarCalc version 5.73. Starcalc it is freeware and available from the Starcalc web site. It is almost professional code!! Catalogs are installed as plugins so your version may be very easily updated.
StarCalc is one of the fastest programs around and may be updated with most catalogs that are also available free.
The latest comet and asteroid database is also available.
The Tycho 2 and NGC catalogs come are on the web site. The tycho 2 catalog will map stars to mag. 12 which is pretty good for most uses.
There is, also, a brilliant program that may be run on PDA's initially it is free - please check. The program is PocketStars and is a Celestial Nav. program with a very goog star chart. Pocket stars only contains the Bright star catalog but it is very useful. PocketStars is one of the most accurate charts and it also has real-time readout of the Az and Alt. of a selected object. Eg. If you select the sun at sunset (or sunrise) and watch the sun setting (or rising) and look at the Pocketstars display you'll see that just when you see the sunset the display will be "spot on".
clear skies,
Jerry.
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