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Frank Reed wrote:

> Speaking of off-the-shelf devices, one can buy a digital level  for
> about a hundred bucks that will read out angular tilt relative to
true level
> accurate to +/-0.1 degrees or so. Stick a sight tube on top of one,
and you can
> measure altitudes simply by aiming --point and shoot.

How do you propose to read the level do the sextant sight at the same
time (I know, it's all done with mirrors...).

I'm already having enough of a challenge trying to get sights with
Celestaire's bubble horizon for the Astra - it's a lot like trying to
stand on a beach ball in the deep end of the pool.  :-)

> Unfortunately, this throws away one big advantage of the sextant
which is that it is not
> particularly sensitive to motions of the observer's hands.

Gyro-stabilized gimbaled tripod, perhaps?  :-)

--
GregR

> "I'm wondering if the laser measuring devices  that you can get at
> home
> improvement stores would also work for  this..."
>
> Speaking of off-the-shelf devices, one can buy a digital level  for
> about a
> hundred bucks that will read out angular tilt relative to true level
> accurate
> to +/-0.1 degrees or so. Stick a sight tube on top of one, and you
> can
> measure altitudes simply by aiming --point and shoot. Unfortunately,
> this throws
> away one big advantage of the sextant which is that it is not
> particularly
> sensitive to motions of the observer's hands.
>
> -FER
> 42.0N 87.7W, or  41.4N 72.1W.
> www.HistoricalAtlas.com/lunars


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