Sight reduction

Great circles, computed altitude, azimuth and meridian latitude, step by step.

Trains CY navigation calculations. Generated data, not for navigation.

Related questions

• The Pole Star is of:
• All bodies visible from an observer’s position that have the same altitude lie on:
• If, sailing from Cape Verde to the Caribbean, we keep zone time all the way, we must:
• When the Sun’s disc cuts the horizon in the west and its upper limb is tangent to it, this is:
• The arc of meridian counted from the observer’s position on the celestial sphere to the elevated pole is:
• The greatest possible difference between zone time and local civil time at any point of the zone we are in is:
• What is the name of the small circle parallel to the apparent horizon of an observer on the celestial sphere?
• The arc of the celestial equator counted from the point of Aries to a star’s hour circle is called:
• Equatorial uranographic coordinates use two arcs of great circles of the celestial sphere. Name them:
• Every meridian, on the terrestrial or the celestial sphere, has:
• The declination of a body on the celestial sphere is an arc of a great circle that corresponds to:
• On the celestial sphere, an observer is at their zenith, and from this point to the elevated pole there is an arc of celestial meridian called: