Classes in celestial navigation and related topics
Lunars: Finding Longitude by Lunar Distances
An intermediate level class in the famous method of finding longitude by observing the Moon's angular separation from the Sun and bright stars. Lunars were widely used at sea in the early 19th century in the era before chronometers became common. Observing with a fine sextant, navigators used the Moon as a great natural clock in the sky. From James Cook and Nathaniel Bowditch to Joshua Slocum, lunars were a challenge that proved a navigator's skill. Participants in this workshop will learn the details of adjusting a sextant properly for shooting lunars, tricks for taking accurate sights, and easy methods for clearing these famously difficult observations. We'll also talk about some of the interesting mathematics and astronomical theories that made lunars possible. For a modern celestial navigator or navigation enthusiast, there is no better test of your sextant and observing skills. Weather permitting, students will have opportunities to take actual lunar observations, determining their longitude in the great tradition of Cook and Bowditch and Slocum.
- Mystic Seaport Museum, Mystic, CT. Saturday and Sunday, 10:00 am - 4:00 pm both days.
- Requirements: an introductory course or equivalent in the the use of a sextant and other basic concepts of celestial navigation. High school level math skills and a basic familiarity with trigonometry are recommended.
- Cost (subject to change): $140 ($125 for members of Mystic Seaport)
- Register for this class by phoning the Reservations desk at Mystic Seaport Museum: 860.572.5322, press 1 at the prompt.
- By email or phone
© Copyright 2016, Frank Reed, Clockwork Mapping, Conanicut Island USA.