Table of Contents
Class Prep
Class 1
Class 2
Class 3
Class 4
Class 5
Class 6
Class 7
Class 8
Class 9
Class 10
>>Topical Articles<<
Assumed Longitude
Bowditch
Bygrave
Casio fx-260 Solar II
Emergency Navigation
Making a Kamal
Noon Sight
Pub. 249 Vol. 1
Sextant Adjustment
Sextant Skills
Sight Averaging
Sight Planning, Error Ellipses, & Cocked Hats
Slide Rules
Standard Terminology
Star Chart
The Raft Book
Time
Worksheet Logic
BCOSA.ca
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Class 4: July 30, 2019
New Pages Added to This Web Since Last Week
Class Plan
- Ofer's comments/questions from textbook
- Using iPhone calculator to calculate error ellipses. This helps one evaluate whether he has a sufficient "cut" between two celestial objects.
- Reduce and plot Ofer's moon sight
- Reduce and plot Ofer's star sight
Materials Required
- Sight reduction worksheet
- Plotting sheet
Homework Assignment
- Review the new and changed pages at this web site.
- Reading assignment in textbook: Chapter 7, Star Sights and Chapter 9, Moon Sights
- In next week or two, get out on a boat and take 4 sights of the same object within 6 minutes. We will use this data to learn sight averaging.
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