ReedNavigation.com

Classes in celestial navigation and related topics
 

Expert Celestial

2026:
  • Register Oct 31,Nov 1 ATLANTIC session: 10am-4pm US Eastern time (1400-2000 UT), online.

Explore the underlying concepts and math of celestial navigation including spherical triangles, azimuth calculations, great circle distance, and other exotic topics. We'll learn refined methods for taking sights and eliminating the smallest errors in sextant observations, and we'll learn all about standard Moon sights. We'll explore the principles behind various methods of sight reduction as well as calculator-based azimuth calculations.

Forward-looking, modern, and calculator-based, this workshop is an excellent sequel to our "Modern Celestial" and "Advanced Celestial" workshops. More history, more science, more math, more navigation!

All workshops: $ 149 per person, per workshop

Created and taught by Frank Reed, celestial navigation and astronomy consultant on the team that found Shackleton's "Endurance" in 2022. Also a recent guest expert in celestial navigation on Neil deGrasse Tyson's StarTalk on The National Geographic Channel.

If you're registered for an online workshop, you're invited to attend hour-long sextant practical sessions in Rhode Island and Connecticut scheduled as weather and other factors permit. These live, in-person sessions are included in your registration for online classes.

Comments:


Captain Richard D. Buchanan wrote:
I have taken Frank's Modern Celestial Navigation class twice. I am always inspired and I always come away with a few practical techniques and more than a few insights into the history and beauty of celestial navigation. You owe it to yourself to enjoy this class, whether or not you are a mariner.
Greg Rudzinski wrote:
The online class "Lunars: Finding Longitude by Lunar Distance" was a very interesting introduction to the esoteric history of lunars as practiced at sea in the pre chronometer 18th century tall ship era. Practical instruction was also done demonstrating the physical process of observing a lunar with a sextant followed by a how to lunar sight reduction example using a pocket calculator, formulae, and tables. A very rewarding experience.

Greg Rudzinski
Retired Merchant Mariner
SUNY Maritime class of 80
John Brown wrote:
Frank
Thanks for a great app. The new option of using SI unit is really useful for us on the other side of the pond.
I have upgraded to the pro version and passed news of the upgrade to a friend learning to use her sextant. No doubt she will also relay this info.
Best regards
John Brown

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