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Bowditch up though at least the 1977 edition had table number 29 with
instructions for its use for "ex-meridian sights." This table gives
you the corection to add to Ho so as to calculate what the meridian
altitude would have been based on a sight of the sun taken near noon.

Gary LaPook

On Feb 15, 7:33 pm, Bill  wrote:
> Alex
>
> As my texts deal with marine navigation, I had surmised the fly boys with
> bubble sextants had come up with interesting ways to use the stars.
>
> > You are welcome to borrow my copy of Lecky.
> > He is a big fan of stars (and opponent of the Lunars)
> > and he advocates meridional altitudes of stars.
> > Not only upper culminations but
> > also lower culminations.
> > (Of circumpolar stars)
> > But he also writes that "soon the LOP navigation
> > will be the only method used in practice",
> > and was is right.
>
> Still interesting.
>
>
>
> > The Russian manual of 1966 or so, has a brief discussion
> > of "near meridian" Sun altitudes, but nothing else
> > except LOP. The only reason why meridian and near meridian
> > altitudes survived to 1966 was that the reduction
> > is very simple. With the spread of calculators,
> > this last reason disappeared.
>
> I was familiar with ex-meridian sun sights with Ho adjusted to maximum via
> Bowditch tables.  The star thing sounds like fun.
>
> > In asto navigation manuals for airplanes
> > (I read the 2 volume set by Chichester
> > he wrote this before his circumnavigation when he
> > was working in the MkIX factory during WWII. Purdue
> > aerospace library has it. I can check it for you
> > if you wish)
> > he also spends a lot of time on stars
> > (rather than the Sun) emphasizing that you can have
> > an immediate fix with two stars.
> > And the stars are always visible from an airplane
> > at night, and you don't care about the horizon etc.
>
> Thanks.  I'll wait on Chichester until I work through the other
> volumes/papers we mentioned on our trip to Strictly Sail.
>
> Bill


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