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I agre that the electronics package should be remote - probably should
also be a smart phone app -only down side is that both are required to
be available and in working condition.

Cheers!

Bruce
Quoting Don Seltzer :

> The sensor is probably an optical encoder. I once toyed with the idea of
> making a sextant instrumented in that manner.  It would have required a 15
> bit encoder to resolve 1 arc minute.  Absolute encoders of that resolution
> were prohibitively expensive, particularly in a package that small.
> Incremental encoders, which would have to be properly zeroed at turn on
> would be more likely candidates, but would still not be cheap.
> The expensive, custom made, bulky electronics package mounted on the
> sextant does not make a lot of sense.  Better to design a bluetooth
> interface to a smart phone and put all of the functionality into an app.
>
> Don Seltzer
>
> On Thu, Sep 10, 2020 at 12:40 PM Greg Rudzinski 
> wrote:
>
>> Interesting arrangement but... a bit bulky and doesn't sense vertical. I
>> didn't see in manual any description of how the arc sensor functions. Can
>> it take a wave and keep on ticking ?  I'm thinking that a digital camera
>> system would be better.
>>
>> Greg Rudzinski
>>
>> 
>> 
>>
>
>
> :
> http://fer3.com/arc/m2.aspx/Digital-Sextant-Seltzer-sep-2020-g48559

   

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