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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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Re: Measurements
Date: 2017 Jul 25, 13:35 -0400
Tony

I said *electronic* computation.  Unless our calculator or computer works in D.M.S. format, we will need to convert our D.M.S. sextant reading into decimal degrees format. Some calculators do have a D.M.S. interface, but internally, it's all decinal. Of course, scratching out your answer with pencil and paper doesn't require a conversion, but then, it isn't electronic.

There really isn't much difficulty in converting from D.M.S. to decimal degrees, for either positive or negative angles.  The modest fun begins when converting from decimal degrees back to D.M.S., insuring the proper use of truncation, floor, integer and rounding functions such that the result is proper for both positive and negative angles.  Modest fun is the appropriate phrase!  It's just tricky enough to require some thought, yet not so difficult as to require deep thought.

On Jul 25, 2017 12:21 PM, "Tony Oz" <NoReply_TonyOz@fer3.com> wrote:

Brad said it is "very advantageous when utilizing electronic computation to convert to decimal degrees".

I can't see why is there any advantage? If one's sextant is graduated in ° and ', if NA provides data in the same format - why convert?

Regards,

Tony

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