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Andres pointed out-


I have found this with google:
Self-Contained Celestial Navigation with H. O. 208 by John S. Letcher, Jr.
www.devill.net/Infos/Astro/Celestial-navigation-with-HO208.pdf

I think is still under copyright!!!

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from George-

Unfortunately, this is a copy only of certain selected chapters, not the
complete work, and misses out the 90-page full copy of HO 208 (Dreisenstok),
included within the printed edition.

However, it's a useful selection, providing (for example) a pretty good
explanation of taking lunar distances. Letcher also offers techniques which
I have frequently criticised for their limited accuracy, such as
longitude-around-noon, and lunars-from-altitudes. In these cases Letcher is
commendably careful to emphasise the situations in which they can be
usefully applied, and their limitations.

It's a book which I heartily recommend, if you can lay your hands on a
printed version. It shows its date (1977) somewhat, in that in refers to the
early days of trig-capable calculators, but not programmable ones.

Speaking of Letcher, he has written an excellend book on self-steering gear,
if anyone goes in for that stuff nowadays. I think he has been a  regular
contributor to a US sailing magazine (maybe still is).

George.

contact George Huxtable, at  george@hux.me.uk
or at +44 1865 820222 (from UK, 01865 820222)
or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.

   

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