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April 2017

Celestial Navigation: 19th-Century Methods

April 1 - April 2

Learn celestial navigation from the historical perspective of the Age of Sail.

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New! The Science of Time

April 15 - April 16
Treworgy Planetarium

Learn all about time from the most basic principles to “time sights” aboard the CHARLES W. MORGAN to atomic time in the Space Age

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Direction by Magnetic Compass

Treworgy Planetarium

This workshop will teach participants to understand the Earth’s magnetic field and its influence on the compass.

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May 2017

Easy Introductory Celestial Navigation

Plath Sextant, 1930

Learn how to shoot the Sun at Noon and how to use the Sun and stars as a compass.

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Lunars: Finding Longitude by Lunar Distances

May 13 - May 14

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…

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Modern Celestial Navigation

May 16 - May 18

This is not your grandparents’ celestial navigation! A fast-paced introduction to celestial navigation from a 21st century perspective. In this hands-on workshop, participants will learn how to adjust and use sextants available on the market today. We’ll learn streamlined calculations using a common handheld solar-powered calculator. This workshop is designed especially for yachtsmen and recreational boaters. If you’re dreaming about a trans-oceanic voyage or circumnavigation, in this workshop you’ll learn all the techniques to determine latitude and longitude anywhere on…

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Boating with Tides and Tidal Currents

NOAA Charts

This workshop will provide an understanding of the celestial causes and geographic influences of tides; general tidal timing and local variations; determining the state of the tide and tidal current; and boating with tidal currents.  

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New! Traditional Celestial Navigation using HO229

May 27 - May 28
Treworgy Planetarium

A fast-paced introduction to standard celestial navigation as it was practiced in the latter half of the 20th century, before the introduction of electronic tools like calculators and other computing devices. Pure paper and pencil methods using tables like H.O.229 and H.O.249 and three-star plots for a fix by the "intercept method". Details of the modern Nautical Almanac and the more-useful Air Almanac. This workshop is ideal for the navigator who wants a pure, technology-free, traditional version of celestial navigation…

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June 2017

New! Advanced Modern Celestial Navigation

June 3 - June 4
Treworgy Planetarium

Explore the underlying concepts and math of celestial navigation including spherical triangles, exact azimuth calculations, great circle distance, ex-meridian sights, and other exotic topics. We'll learn refined methods for taking sights and eliminating the smallest errors in sextant observations. 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 Navigation". We'll also look at position-fix by lunars and artificial satellites.…

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Easy Introductory Celestial Navigation

June 10 - June 11

An easy introduction to the basic principles of celestial navigation from a modern perspective designed for yachstmen and recreational boaters as well as long-distance hikers and cross-country explorers. Also appropriate for anyone interested in a quick overview of the science of celestial navigation. This class covers the classic, time-honored method of finding latitude by Noon Sun and longitude by observations before and after noon (including frequently neglected corrections for motion of the observer). We'll also learn how to use the…

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Celestial Navigation: 19th-Century Methods

June 13 - June 15

Learn celestial navigation from the historical perspective of the Age of Sail.

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Modern Celestial Navigation

June 17 - June 18
Sextant

This is not your grandparents’ celestial navigation! A fast-paced introduction to celestial navigation from a 21st century perspective. In this hands-on workshop, participants will learn how to adjust and use sextants available on the market today. We’ll learn streamlined calculations using a common handheld solar-powered calculator. This workshop is designed especially for yachtsmen and recreational boaters. If you’re dreaming about a trans-oceanic voyage or circumnavigation, in this workshop you’ll learn all the techniques to determine latitude and longitude anywhere on…

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Stars Over Mystic: “Star Lores”:

June 30

We invite you to join us as we kick off our "Stars Over Mystic" series with a look at the night sky through diverse lenses.

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July 2017

Stars Over Mystic: Rediscovering Pluto

July 14
Treworgy Planetarium

Tonight is the two-year anniversary of the New Horizons Pluto flyby , we will look back to see how much we've learned!

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Stars Over Mystic: The Search for Exoplanets

July 28
Treworgy Planetarium

In February, NASA made the ground-breaking announcement that a star called Trappist-1 has SEVEN "Earth-like" planets orbiting around it.

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August 2017

Stars Over Mystic: The Analemma

August 25

Did you ever notice that sundials don't always line up with the time on our watch or smartphone?

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