IOAA 2012, Наблюдения, първа нощ, английски — Задача 2

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

Estimate the diameter of the field of view of this telescope, using 10mm Plössl eyepiece and star chart-1, showing nearby region of open cluster NGC 6231. On star chart 1 there are two angular distances shown. Use them as reference. Express your answer in arc minutes. (Duration: 5 min)

Star chart (TheSky (c) Astronomy Software 1984-1998) of the field around the open cluster NGC 6231, with the dense cluster near the centre; two hand-drawn lines from one star below the cluster are labelled 13.3' and 9.5'; two bright stars at the bottom are labelled ζ2 and ζ1.
CHART 1 - NGC 6231 Field of view

Отговори

Решение

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