IOAA 2013, Наблюдения, нощен тур — Задача 1
7th International Olympiad on Astronomy & Astrophysics, 27 July – 5 August 2013, Volos Greece — Observational test · 27 юли 2013 г.
Указания
When you arrive at the telescope, you will be provided with suitable equipment and shown how to use it. You will also be given the answer form. Fill in your student code number before starting the questions.
Условие
(penalty if student kicks the telescope)
(1) Chose one of the two eyepieces of the Olympiad telescope and using a suitable, bright object measure the field of view of the telescope. Give your answer and working on the answer form.
Решение
Answer: The attendant will provide a chronometer (his cell phone) and asks the student to get familiar with the stopwatch function.
The student should select and observe any star from the “Bright Stars catalogue visible from Greece” that is provided by the attendant. The name of the star and its declination is written on the data sheet. (1 point)
(Note: If the student selects α UMi the attendant should not warn him).
The student measures and writes down the crossing time of the star that he/she has selected.
(Marking scheme: ±4 s: 100%, ±6 s: 80%, ±8 s: 60%, ±12 s: 40%, ≥ 12 s: 0). (5 points)
The field of view is then calculated by the student on the spot, by using the formula:
(4 points)
(Example: for Capella [dec = 46°.0, cos (46.0) = 0.6947] and transit time t = = 3.53 min we get:
)
[Maximum allowed time 10 minutes]
Оригинал в Архива: Observational_night.doc