IOAA 2009, Наблюдения — Задача 1. Naked Eye Observations — Question 1

3rd International Olympiad of Astronomy and Astrophysics — Observational Competition · 40 т.

Please read these instructions carefully:
  1. All participants will receive a problem set, a writing board, a pen, a ruler and a headlight by the organizers.
  2. This competition consists of two parts: i) Two questions on “Naked Eye observation”. You Have 12 minutes to answer these two questions. ii) One question on “Using a telescope”. Each part of this question has a specific time, which is mentioned in your question sheet.
  3. All participants will be guided by assistants to the observing site until returning to the waiting hall. Assistants will collect the answer and problem sheets.
  4. Do not forget to fill out the boxes at the top of each answer sheet with your country name and your student code.
  5. You have 2 minutes to familiarize yourself with Observing ground and darkness of your environment, just before starting the exam time in observing ground.
  6. Examiner’s alarm will indicate the beginning and the end of each part of your exam.
  7. Each problem has a specific guideline which helps you during the exam.

Условие

You Have 12 minutes to answer the questions of the Naked Eye Observations (Question 1 and Question 2).

1.1: Figure 1 (frame size ≅100∘×70∘\cong100^\circ\times70^\circ) shows a part of the sky, for 22 October 2009 at 21:00 local time. Four bright stars in Perseus and Andromeda constellations are missing in this chart. Find these missing stars by looking at the sky. Then, draw a cross on the location of each missing bright star in these two constellations on the chart (i.e. figure 1). Use numbers in table 1-1 to indicate these crosses.

Note: Polaris is indicted by “N” symbol in figure 1.

Table 1-1

NumberCommon NameBayer Names
1MirfakAlpha Persei
2AlpheratzAlpha Andromeda
3-Epsilon Persei
4MenkibXi Persei
5-Gamma Persei
6AlgolBeta Persei
7AlmachGamma Andromeda
8-Delta Andromeda
9-51 Andromeda
10MirachBeta Andromeda
11AtikZeta Persei
Question 1 star chart with four stars removed; Polaris and N are marked.
Question 1 — Figure 1

Решение

Теми и трудност

Трудност: неоценена.

Небесна сфера и сферична астрономия · Небесни координати

Предпоставки: Разширена олимпиадна подготовка

Оригинал в Архива: 2009_Observation.pdf · официални решения: IOAA2009_final.pdf