A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Brad Morris
Date: 2016 Jan 24, 20:59 -0500
Immediately after I got serious about celestial, I picked up the 1969 edition of Dutton's.
Now you know why I recommend it to everyone. It's an excellent resource, written for midshipmen at the Academy. Therefore, the text assumes college level reading comprehension, and motivated midshipmen, so it reads well.
I'll repeat that. Highly recommended reading resource. Just get one before the change over to GPS in the early 1979's.
My sextant from 1921 has an astigmatising shade. Of course, that sextant has every toy know to man!!! Its very high end. Frank got to see it one day. We laughed at how you could swing the arc with the provided BINOCULAR optics!
Following a reference to this book in a Navlist post some while ago I found a copy. I wish I'd started Celestial Navigation with this book as it gives a very good explanation. It also covers a lot things I'd been curious about plus quite a lot I didn't know about such as:Correction for irradiation.Correction for air-sea temperature difference.Astigmatising shades - where can I get these?Chart projections, types and how they work.Differences in technique for Polar regions.Gyroscopic systems.Astro trackers.Doppler satellite navigation ( pre- GPS).All in all an excellent addition the library.BobC