LSC Basics of Astro Navigation - 19 Oct, 9, 16 & 30 Nov 2022
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
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Date and time
Wed, 30 Nov 2022 21:00