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Subject: Re: Star Finder Software
daveweilacher@XXX.XXX
Date: Mon Feb 04 2002 - 17:23:14 EST
SkyPlot is a DOS program. It has old style menues. You enter values on a setup screen, then go to a separate plot screen, then run a step that builds a "PRN" file, then display/print this file with wordpad or some such.
I really like it. The print file lists the HC and Zn of all 57 nav stars plus sun, moon, and 4 planets (if visible). It has a disclaimer that the planet, moon data may be off by more than a mile. So what!
It will also display/print an image that shows you what stars, etc you would see for the date, time, DR, you entered.
A really agravating, nit picky little thing that bothers me every time I use it is that you enter lat/lon in degrees and decimals even though it gives you back degrees and minutes.
I've tested it fairly thoroughly because I use it to set up plots for a celest nav class. Our plotting has yet to discover any serious error on the part of the program. (By serious, I mean a discrepency large enough that it wasn't accounted for by our inability to draw straight lines, measure distances, or do simple arithmetic)
Original Message:
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From: Chuck Griffiths griffiths_chuck@XXX.XXX
Date: Mon, 4 Feb 2002 16:58:53 -0500
To: NAVIGATION-L@XXX.XXX
Subject: [NAV-L] Star Finder Software
I'm wondering if anyone knows of a good freeware option for predicting star,
planet, moon and sun altitudes and azimuths in the 2102D style. I know Celestair
sells software called SkyPlot for PC and I'd be interested to hear reviews even
though it's not free. I recently found an online program at
www.weatherunderground, the link is:http://www.wunderground.com/sky/index.asp.
It's a very nice program but the input for location is zip code rather than
lat-long so it's not much use for passage planning and the plots don't print out
very well.
Chuck Griffiths
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