IAO 2015, theory, β — Задача 2

*АСТРОНОМИЧЕСКОЕ ОБЩЕСТВО

EURO–ASIAN ASTRONOMICAL SOCIETY

Round Theo

Group β

язык language English

XX Международная астрономическая олимпиада

XX International Astronomy Olympiad

Россия, Татарстан, Казань 15 – 23. X. 2015 Kazan, Tatarstan, Russia

Theoretical round. Problems to solve · 15 октомври 2015 г.*

Условие

2. Eclipse on the Poles. The White Bear and the Penguin from the previous International Astronomy Olympiads returned to their poles (North and South respectively), and decided to observe an annular solar eclipse. The Penguin was lucky to see an amazing picture: at the maximum phase of the eclipse the centres of both discs, solar and lunar, appeared just on the visible horizon. And what did the Bear observe at this time? Draw what the White Bear saw at that moment, and also contour by dotted line the true positions of the Sun and the Moon.

Assume that the Earth is spherical. The drawing should include an artistic picture with an image of the Bear on North Pole; necessary sizes or angular sizes should be pointed out in the picture. Recollect for yourself the necessary information about the animals.

Решение

Оригинал в Архива: theo_beta.pdf