IOAA 2018, Наблюдения — Задача 1. O1
12th International Olympiad on Astronomy and Astrophysics — Observational Competition and Mountain Team Competition · 40 т.
Внимание: Бележка към темата
The archive includes separate suggested KOR corrections. O4 changes the accepted constellation; O5 proposes 1.7° while the final night key prints 1.8°. Both versions and their original scoring are retained. The Mountain task has no supplied key.
Условие
Day — Instructions
This part of the contest consists of 4 problems, is 1 hour long and is worth a total of 100 points.
Only blue pen should be used to fill in the answer boxes, draw and mark on the star chart.
You are not allowed to leave your working desk without permission. If you need any assistance (malfunctioning calculator, need to visit a restroom, etc.), please put up your hand to signal the supervisor.
The beginning and end of the competition will be indicated by a long sound signal.
Wait at your table until your envelope is collected. Once all envelopes are collected, your student guide will escort you out of the competition area.
Figure 1 is a whole sky star chart of Yanqing, Beijing at 20:30 tonight (UTC+8) with the limit magnitude = (m = magnitude). Four stars (about - ) and one planet (brighter than ) are missing in this chart. In the chart, the distance from the centre is in proportion to zenith distance
(1) Draw a cross (X) on the location of each missing star and mark “T” on the chart, and draw a cross (X) on the location of the missing planet and mark “P” on the chart. [20 т.]
(2) Please mark the orientation of the star chart with “N” “E” “S” “W” at the edge of the star chart. [5 т.]
(3) On the chart, the celestial equator passes through many constellations. Please write down the name of any five of these constellations (IAU codes). [10 т.]
(4) Using the star chart, estimate the altitude of Aldebaran (α Tau), to the nearest degree. [5 т.]
Решение
(1) (20 points)
See figure 1. P = Mars. Stars = α Aql, α Cep, ε Cas, α Ari. (anticlockwise)
4 points for each. Inside the small circle = 4 points. Between the small and big circle = 2 points.
(2) (5 points)
See figure 1.
1 point for each. 5 points for all. Between the curve = 1 point.
(3) (10 points)
From west to east: Ophiuchus (Oph), Serpens (Ser), Aquila (Aql), Aquarius (Aqr), Pisces (Psc), Cetus (Cet), Taurus (Tau), Eridanus (Eri), Orion (Ori).
2 point for each. 10 points for 5 or more.
(4) (5 points)
18.33°.
5 points for 16° ~ 21°, 3 points for 13° ~ 15° and 22° ~ 24°, 1 point for 10° ~ 12° and 25° ~ 27°.
Figure 1
Оригинал в Архива: Observational Problems.pdf · официални решения: 18_obs_day_sol.pdf · допълнителни данни: 18_obs_night_sol.pdf · допълнителни данни: IOAA-Observation.zip / IOAA-Observation/Suggestion by KOR/IOAA2018 Observational Solution (Day)_correction.docx · допълнителни данни: IOAA-Observation.zip / IOAA-Observation/Suggestion by KOR/IOAA2018 Observational Solution(Night-Cloudy)_correction.docx · допълнителни данни: IOAA-Observation.zip / IOAA-Observation/Suggestion by KOR/Readme_correction.docx · допълнителни данни: 18_team.pdf