Monthly Archives: November 2015

The Demystified Astro Navigation Course – Unit 4

Unit 4 – The Importance of Altitude, Azimuth and Zenith Distance in Astro Navigation.  Zenith. The Zenith is an imaginary point on the celestial sphere directly above the observer.  It is the point where a straight line drawn from the … Continue reading

Posted in astro navigation, Astro Navigation Demystified, astronomy, celestial navigation | Tagged , , , , ,

The Demystified Astro Navigation Course Unit 3 Part 3

Unit 3 Part 3 – Altitude Correction tables for the Moon Note.  Units of this course can be viewed in numerical order under ‘Astro Nav Course’ on the menu bar.  The Moon’s Semi-Diameter.  When the Moon is not full, sometimes … Continue reading

Posted in astro navigation, astronomy, celestial navigation | Tagged , , , ,

The Demystified Astro Navigation Course Unit 3 Part 2

Unit 3 Part 2 – Altitude Correction tables for the Sun, Stars and Planets. As shown in the table extract below, corrections for the Sun are divided into two parts to allow for changes in the Sun’s semi-diameter during the … Continue reading

Posted in astro navigation, astronomy, celestial navigation | Tagged , , , ,

The Demystified Astro Navigation Course – Unit 3 Part 1

Unit 3  Part 1 – Altitude and Azimuth     The Azimuth is similar to the bearing in that it is the angle between the observer’s meridian and the direction of the celestial body.  However, whereas bearings are measured clockwise from north … Continue reading

Posted in astro navigation, Astro Navigation Demystified, Astro Navigation Topics, astronomy, celestial navigation | Tagged , , , , ,