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Old 09-12-2014, 19:17   #1
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Best Celestial Navigation App

Purely for pleasure while sailing I am looking for a celestial navigation app for my IPad. Don't want to carry almanac and reduction tables. Star pilot seems ok from a distance. Any experience or comments on available programs?
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Old 23-12-2014, 16:59   #2
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Re: Best Celestial Navigation App

Regrettably many replies in these matters begin this way, "I don't have an iPad BUT...."

...StarPilot will probably be the best choice and will make CelNav a lot easier if you're not inclined to use paper and pencil.

If your machine can run xls spreadsheets Peter Hakel has made many spreadsheets for Celnav, et al.

Interactive Spreadsheets for Celestial Navigation

They're free but take some "getting used to" in terms of entering coordinates. But, they're great programs.

Also, a perfect Sun sight reduction spreadsheet can be obtained here;

Excel Sight Reduction Spreadsheet for Astro Navigation.

Erik Deman has all of the Nautical Almanac information on his site.

Celestial Navigation: Contents

You can get HO 249 Volumes 1, 2 and 3 here;

https://www.celestaire.com/pubs/category/3-pub-249.html

Fair winds and clear skies.
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Old 24-04-2015, 07:39   #3
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Re: Best Celestial Navigation App

On my iphone I use an app simply called "Celestial." My app has a blue background with a graphic of a marine sextant in white. It has the ability to reduce sights for all 57 navigational stars, sun, moon, and planets. It is fairly simple to use and generally agrees with the calculator method of sight reduction which is the most accurate method.
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Old 24-04-2015, 10:45   #4
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Re: Best Celestial Navigation App

Quote:
Originally Posted by cygnussailor View Post
On my iphone I use an app simply called "Celestial." My app has a blue background with a graphic of a marine sextant in white. It has the ability to reduce sights for all 57 navigational stars, sun, moon, and planets. It is fairly simple to use and generally agrees with the calculator method of sight reduction which is the most accurate method.

Thanks for that advice. Just downloaded - looks useful.


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Old 24-04-2015, 17:36   #5
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Re: Best Celestial Navigation App

Just for backup purposes you can get The Nautical Almanac for any year up to 2020 at

The Nautical Almanac

Everything you need to do a sight reduction is available at that site.
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