IOAA 2012, Наблюдения, втора нощ, английски — Задача 4
IOAA´s 2012 2nd try Observational Exam
Внимание: Бележка към темата
Star charts 4–6 are supplied from the corresponding Bulgarian observational packet. Its filename is English, but its task sheet and captions are Bulgarian. The original English text-only edition and its inline key are retained: task2 gives only a)1.5 and b)0.5 without explaining these values; no missing drawing is invented. The time limits differ between the English and Bulgarian packets, so the English inline key governs this edition.
Условие
Point your telescope to the binary star Albireo (-Cygni) using star chart-6 as guide. That pair components are magnitude 3.2 and 4.7 separeted by 34.8” (2010). Evaluate color of each star: (3 min)
| Brighter: | White ( ) | blue ( ) | Yellow ( ) | Red ( ) |
| Dimmer: | White ( ) | blue ( ) | Yellow ( ) | Red ( ) |
Отговори
- Brighter: Yellow (K3II); Dimmer: blue (B8V)
Решение
(3 minutes)
| Brighter: | White ( ) | blue ( ) | Yellow ( X ) | Red ( ) | (K3II) |
| Dimmer: | White ( ) | blue ( X ) | Yellow ( ) | Red ( ) | (B8V) |
Оригинал в Архива: ObservationalNight2text.doc · допълнителни данни: ObservationalNight2.docx