IOAA 2012, Наблюдения, първа нощ, английски — Задача 4

OBSERVATIONAL EXAM – 1ST NIGHT · 4 август 2012 г.

General instructions — Observational Exam
  • The duration of the exam is 20 min for each student.
  • There will be a copy of these instructions inside the envelope with the exam that will be given to you.
  • The exam is individual, and no conversation with anybody except with the guide who will be helping you with the telescope is allowed.
  • The necessary sky charts are included in the exam that will be handed to you.
  • In questions that involve pointing the telescope, the student can ask help of assistant at any time, at the cost of not getting the full marks for that question.
  • Material provided for each student: red flashlight, laser pointer, pencil, pen, eraser and clipboard.
  • WRITE YOUR ANSWERS IN INK. The organization will give you pens.

Условие

Point your telescope to the binary star ε\varepsilon Trianguli Australis using star chart-3 as guide. If you are not able to point at the star, the instructor will do it for you but you lose 50% of the points. That pair components are magnitude 4.1 and 9.3 separated by 82”. Evaluate color of each star: (Duration: 2 min pointing, 3 min determining the color)

Star chart (TheSky (c) Astronomy Software 1984-1998) of the southern sky with constellation lines and boundaries of Circinus, Triangulum Australis, Crux, Musca, Apus, Chamaeleon and Octans, stars labelled with Greek letters; a hand-drawn blue arrow points to ε in Triangulum Australis.
CHART 3 - ε Trianguli Australis location

Brighter: White/blue ( ) Yellow ( ) Red ( )

Dimmer: White/blue ( ) Yellow ( ) Red ( )

Отговори

Решение

Оригинал в Архива: ObservationalNight1.docx · официални решения: ObsSOLUTION_Night1.docx · допълнителни данни: Instructions-obs.docx · допълнителни данни: ObservationalNight1text.doc