ReedNavigation.com

Classes in celestial navigation and related topics
 

Expert Celestial

Winter / Spring 2026:
  • Register Apr 27,28,29 PACIFIC session: 8pm-11:45pm US Eastern time (0100-0445 UT next calendar day), 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:


Lee Schacter wrote:
A great course and teacher. Finally got my head around celestial navigation...
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
Dr. Stanley J. Zawada & Ilona M. Kovacs wrote:
If we could leave 5 stars, we'd leave 10 ! We have attended several courses and enjoyed each one! Mr. Frank Reed is as entertaining as is his complete mastery of the subjects he teaches. The level of preparedness shines like the stars he so loves. We thank you for the most excellent courses we have had the ultimate pleasure to experience.

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