Sextant

Bring the sun to the horizon, read the arc and correct the reading.

Trains CY sextant use. A simulation, not for navigation.

Related questions

• The sextant’s index error:
• Before observing with the sextant we will take into account:
• To get horizontal angles between points on the coast with the sextant, the reading needs:
• The sextant’s index error is...
• In sextant sights, which error refers to the angle between the sea horizon and the apparent horizon?
• The greatest altitude of a body observable with the sextant occurs at its...
• On 24.11.2024, the Sun’s lower limb is observed with sextant altitude 34º 01.5’. Index error Ei = 1.5’ to the right. Height of eye 5 metres. Calculate the Sun’s true altitude.
• On 15.03.2025, the Sun’s lower limb is observed with sextant altitude 34º 06’. Index error Ei = 2` (-). Height of eye 5 metres. Calculate the Sun’s true altitude.
• At the same time a sextant altitude of the star Antares is taken as 75 09.5′ (height of eye 4 metres and index correction −2′), and its true altitude is calculated.
• At 14 38 23 UT on 18 January 2023 the Sun’s lower limb is observed with a sextant altitude of 31º 29.8'. Index correction = +8', height of eye = 6 m. Calculate the true altitude.