Astro Navigation Demystified
Navigate Without GPS
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Stars/Planets
The Retrograde and Prograde Motions of Mars and Jupiter
Stars For All Seasons Part 1
Stars For All Seasons Part 2
Stars For All Seasons – Part 3
Stars For All Seasons Part 4
Stars For All Seasons Part 5
Stars For All Seasons – Part 6
Stars For All Seasons Part 7. Spring Stars in the Northern Hemisphere.
Finding The Stars and Constellations. Part I
Finding Stars and Constellations Part II
Finding Stars and Constellations – Part III
Finding Stars and Constellations – Part IV
Planning Star and Planet Sights
Predicting the Rising and Setting Times and Positions of Stars.
The Southern Cross
How To Locate Polaris (Pole Star / North Star)
Venus – Evening Star or Morning Star?
Latitude From Polaris
Moon
Phases of The Moon
Tidal Effects of the Moon.
Measuring the Altitude of the Moon.
Survival – Finding Direction From The Moon.
Lunar Distance
Sun / Earth
The First Point of Aries
The Ecliptic, The Age of Aquarius and the Tropics.
The Sun’s Declination, the Equinoxes and the Solstices
The Relationships Between Longitude and Latitude and the Nautical Mile.
North/South Movement of the Sun
Time.
Converting GMT to GHA
The Sun as a Time Keeper
The Equation of Time
Sidereal Time
Zone Time
Local Hour Angle and Greenwich Hour Angle
Time difference between meridians of longitude.
Astro Navigation
What Is Astro Navigation?
What’s The Point Of Astro Navigation When We Have GPS?
Why Astro?
The Accuracy Of Astronomical / Celestial Navigation
Making An Ocean Plotting Sheet
Planning Star and Planet Sights
In Defence of Mer Pas
The Celestial Co-ordinate system.
Translating a Celestial Position Into a Geographical Position.
The Importance of Altitude and Azimuth in Celestial navigation.
Bearing, Azimuth and Azimuth Angle.
Astro Navigation in a Nutshell Part 1
Astro Navigation In A Nutshell Part Two
Astro Navigation In A Nutshell Part 3
Astro Navigation In A Nutshell Part Four
Understanding Meridian Passage (Mer. Pas.).
Applying the Equation of Time when calculating longitude at the Sun’s meridian Passage.
Meridian Passage Short Method
Meridian Passage Long Method
Altitude Correction for Parallax
Altitude Correction for Semi-Diameter
Altitude Correction for Dip
The Astronomical Position Line
The Relationship Between Altitude and Zenith Distance
Planning Star and Planet Observations
Calculating Latitude From The Midday Sun
What’s The Point Of Calculating Our Latitude From The Altitude Of The Sun At Midday?
Calculating Longitude
Accuracy of Sight Reduction Methods.
THE IMPORTANCE OF MORNING AND EVENING STAR SIGHTS
The Importance of Morning and Evening Stars – Part 2
The Importance of Altitude and Azimuth Angle in Position Finding
Astro Nav Course
Making An Ocean Plotting Sheet
The Demystified Astro Navigation Course Unit 1
The Demystified Astro Navigation Course Unit 2
The Demystified Astro Navigation Course Unit 2 Self Test
The Demystified Astro Navigation Course – Unit 3 Part 1
The Demystified Astro Navigation Course – Unit 3 Part 2
The Demystified Astro Navigation Course – Unit 3 Part 3
The Demystified Astro Navigation Course Unit 4
The Demystified Astro Navigation Course Unit 5
The Demystified Astro Navigation Course – Unit 6
Azimuth and Altitude Part 1
Azimuth and Altitude Part 2
Azimuth and Altitude Part 3
Survival Astro
Astro Navigation In A Survival Situation
Survival – Polynesian Star Compass (Learning from the Polynesians)
Survival – Pillars of the Sky (Learning from the Polynesians).
Survival – A Plan Of Mathematical Perfection. (Learning from the Polynesians)
Survival – Star Compass 1.
Survival – The Daytime Star.
Survival – Finding Direction From The Moon.
Survival – Calculating altitude without an angle measuring instrument.
Survival – Latitude From The Midday Sun
Survival – Latitude From The North Star
Survival – Find Your Longitude.
The Survival Sundial.
Calculating the Sun’s Declination in a Survival Situation
Survival – Make A Clinometer
Survival – Declination Table
General Interest
Astro Navigation in the Forests of the Iroquois
Could the Global Positioning System Fail?
Titanic and the Traverse Tables
Ptolemy’s Geocentric Model
The Pharos Lighthouse
Eratosthenes Proved The Earth Isn’t Flat
Terrestrial Navigation
Dead Reckoning
Calculating Changes in Longitude and Time Along a Parallel of Latitude.
Short Distance Sailing And Rhumb Line Sailing
Calculating Distance To The Horizon
Schools
Making An Ocean Plotting Sheet
Why Astro Navigation In Schools?
The First Point of Aries
The Ecliptic, The Age of Aquarius and the Tropics.
Calculating Azimuth And Altitude At The Assumed Position By Spherical Trigonometry.
Calculating Distance To The Horizon
Pythagoras
Spherical Trigonometry
Applying Mathematics to Astro Navigation
Exercise 1 – Latitude from the North Star
Exercise 2 = Application of Spherical Trigonometry
Exercise 3 – Short Distance Sailing.
Exercise 4 – Local Hour Angle.
Exercise 5 – Zone Time (ZT)
Exercise 6. Calculating Distance Between Meridians of Longitude Along a Parallel of Latitude.
Trig Tables
Make A Clinometer
Books
Astro Navigation Demystified
Applying Mathematics to Astro Navigation.
Celestial Navigation. Theory and Practice
Astronomy For Astro Navigation.
Sight Reduction Forms
Astro Nav Course
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Recent Posts
The Retrograde and Prograde Motions of Mars and Jupiter
Making An Ocean Plotting Sheet
The Purpose of Altitude and Azimuth Angle in Position Finding at Sea
Planning Star and Planet Sights
The Importance of Morning and Evening Star Sights – Part 2
The Importance Of Morning And Evening Star Sights
Stars For All Seasons Part 7 – Spring Stars in the Northern Hemisphere.
Stars For All Seasons Part 6
Stars For All Seasons Part 5
Stars For All Seasons Part 4
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Astro Navigation Demystified
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