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    Re: Do We Still Need to Use Sextants?
    From: Brad Morris
    Date: 2013 Mar 27, 15:31 -0400

    If we do not exclusively restrict ourselves to commercial devices, then the interesting proposal by Sems already exists!

    Examples
    The SR71 Star Tracker.  US ICBMs have Star Trackers.  It is my understanding that US Navy vessels had/have continuous celestial trackers.  This concept has precisely been realized in the military arena. 

    As Frank rightly points out, after the expense of engineering a precision solution and the reduction to practice and production, how many units can be sold commercially, given the relatively cheap GPS solution?

    On the other hand, a small niche market does exist.  Witness Andres' enthusiasm!  I'm sure that's matched elsewhere by others. 

    Brad

    On Mar 27, 2013 3:13 PM, "David Fleming" <d.l.fleming.1---.com> wrote:

    I am surprised that Greg Rudzinski has not mentioned the work he has done on using a digital camera as a sextant replacement.

    It strikes me as an ideal replacement for a sextant.
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