Никола 2019, 7 септември — Задача 4. 1. Telescope

7 септември 2018г.

Условие

1. Telescope. On the observational round you will use a simple Newton-system telescope with the mirror diameter D = 125 mm, focal length F = 1025 mm and 3 eye-pieces with focal lengths $f_1$ = 12 mm, $f_2$ = 25 mm and $f_3$ = 38 mm. Find on what distances ($\Delta x_1$ =, $\Delta x_2$ =, $\Delta x_3$ = in vertical direction on the middle figure) it is necessary to move the corresponding eye-pieces (1,2,3) to readjust the telescope from observation of the sky objects to observation of a monkey sitting at a distance L = 50 m from you. (Your answer should have both formula and numerical values.) What eyepiece is the most suitable for observation of the monkey? Why?

Addition for $\beta$ group.

1+β. Telescope. L = 50 м as before, but now the monkey is running directly towards you (to steal something to eat) with a speed v = 3 m/s. Find the rate (in mm/s) of moving the most suitable eye-piece for readjusting the telescope to keep the monkey in focus.

Решение

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Оригинал в Архива: 7092019.pdf