The Basics of Astro Navigation in four two hour focused lessons by Dr Alan Walker, Yachtmaster Ocean.

Lesson 1 - October 19th 19:00 to 21:00

The basics, Lat /Long, great circles. Departure, Marine slide rule.

Celestial Sphere, Geographical Position, Zenith, Declination (ecliptic), Zenith Distance. Time and Longitude. Greenwich Hour Angle, Local Hour Angle.

The theory of a meridian noon sun sight. DR Estimate,

Introducing The Nautical Almanac. Work some examples.

Lesson 2 - November 9th 19:00 to 21:00

The Sextant (errors), Hands on practice. The Marine Chronometer (errors).

The Meridian Lat sight worked. Use the Almanac. Increments and Corrections. Equation of Time. Proforma.

Lesson 3 - November 16th 19:00 to 21:00

Sun intercepts, GOAT, Sun/ Run / Sun. Plotting Charts. Introducing Aero Sight Reduction Tables.

Work examples with Proforma. Plot position.

Lesson 4 - November 30th 19:00 to 21:00

The stars, First point of Aries, SHA, Star epoch table. P&N.

Work through examples. Plot intercepts.

Polaris

Cost for Members - £75
Cost for Non-Members - £120

Not a member? Why not give it a go? Receive one month of free membership by completing one of our short courses!

Gallery

Date and time

Wed, 19 Oct 2022 19:00 to
Wed, 30 Nov 2022 21:00

Non-members welcome

Closed