I haven't a clue about proper navigation but I should think an ordinary
compass would work well provided it was corrected for true north. I
think that's a fiddly process but, for your purposes, maybe not
required. If you know, for example, that the sun will be setting at 296
degrees (probably close for your location) just wait for the sun to set
and adjust the compass off magnetic north until you get a reading of 296
degrees and note how far you had to move it (maybe a few degrees). Then
you'll have the correction for the future from that location. My guess
is that it will probably be close enough that a movement within a radius
of 10 miles or so won't change it much... at least relative to the 1/2
degree apparent diameter of the sun.
Chuck Norcutt
Joel Wilcox wrote:
> On Wed, Jul 28, 2010 at 1:18 PM, Ken Norton <ken@xxxxxxxxxxx> wrote:
>> I did load up the desktop version of the program onto my laptop. Works
>> as advertised--which is very well. But honestly, the interface of the
>> iPxxxx devices really brings this type of program to life. It's a
>> whole new ballgame.
>>
>> Regardless, both versions get the Schnozz's "highly recommended" label
>> with four out of five lens-caps.
>
> I've goofed around with the freebie laptop version. Before I plunk
> down actual $$$ for the app, I need to ask you a dumb-ish question:
> it appears that you will need a device once you get "coordinates" for
> the sunrise or moonrise. Is a garden-variety compass the correct
> device, or is there something superior?
>
> Joel W.
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