When is the best time to obtain the amplitude?« Back to Questions List

Posted by marinetales
Asked on September 5, 2021 11:28 pm

The best time to take amplitude is when the body is theoretically rising or setting. This means when the sun's lower limb is half the Semi Diameter above the visible horizon. At this time, the centre of the body is at the rational horizon, but the body is seen above the visible horizon because of refraction.

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Posted by marinetales
Answered On September 6, 2021 12:10 am