Calculator for navigational use

[Ovni]

There where some discussions about calculators a few month ago,
I have looked over the web and found these:

1 Texas Instruments calculators

1.1 For Ti-83 an Ti-84 series, Look at this site:

http://www.ticalc.org/archives/files/authors/74/7404.html

....It's all freeware and has a complete userguide. (calculator $90)
....the programme can be used for both coastal and celestial navigation.

You'll find 1 programme over here in 4 versions:
English language based for Ti-83
English language based for Ti-83 plus / Ti-83 se / Ti-84 series
Dutch language based for Ti-83
Dutch language based for Ti-83 plus / Ti-83 se / Ti-84 series

notice that the Ti-84 will be in the shops by June 2004

1.2 For Ti-86, Ti-89 and Ti-92 series, Look at this site:

www.starpilot.com

....software priced from 129 US dollars, if downloaded. (calculator $ 200)
....the programme can be used for both coastal and celestial navigation.

Hewlett Packard, only for celestial navigation!

2.1 For HP 48 sx and HP48GX, look at this site:

http://www.samsoncables.com/catalog/prodDetail.cfm?Prod_ID=239&Sku=10121DT1AF

... Cel Nav Pac, on a memory card, price $100 (calculator $200)

2.2 For HP 48 and 49, look at this site
http://www.hpcalc.org/search.php?query=celestial&hp48=1&hp49=1

... All freeware programs for celestial sights, no user guides.

3.1 Tamaya, look at this site

http://www.cassens-plath.de/catalog/104d.html

.... Calculator with build in program, price unkown

4.1 Celesticomp V, look at this site

http://www.cassens-plath.de/catalog/105d.html

.... Calculator with build in program, price unknown


As far as I can see there are some real differences:

The freeware program has to be updated for the stars every year. (can you do by downloading the update, or do it yourself). All other programs will work until 2100.

The Ti programs also have usefull things like dr pos calc and tidal calc possibilities.



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[sailorman]

another U.F.O.then

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[Robatbradwell]

I was just about to post exactly the same thing. This needs to be explored in more detail.

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[Ovni]

Found also a program for Casio:
All modern graphic models (25, 35, 65 & 100) (price starts at 75 euro's)

Priced at 15 euro's including a French language user guide.

This program can be compared with the freeware Ti program.
The casio is also suited for stars and sunsight only, but misses programs for dr pos calc, routening, loxodrome, greatcircle composite track and things like that.

Look for info at:
http://www.navastro.fr/en/



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[Ovni]

Some more news about the calculators;

The freeware program for Ti-83 and Ti 84 will be redesigned for the use on a Ti-86 also. It will be released in English, maybe later also in other languages.
Release date somewhere in June.

The reason is because the commercial product for Ti86 is not as good as the Freeware program. The Ti 89 version, that you can buy for the same price, is ok.
(this is a free interpretation from news I got from Switzerland)

If you don't own a graphic calculator at all. The freeware program does the same on all machines. But users of a Ti-83+, Ti-83 Se or Ti-84, don't need a computer to update the star lists for the next year, they can save the update in a rom memory. These calculators are available on the second-hand market for about 50 euros.



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[steveh]

Can anyone recommend a free astro program for a PC?

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[Ovni]

there are several ...

Use the word celestial instead of astro when you use Google.

or watch for instance on:

http://www.celestialnavigation.net/

under resources you find some interesting stuff

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