IOAA 2019, Нощни наблюдения и планетариум — Задача 2. TASK 2: OBSERVATION OF SATURN

OBSERVATIONAL ROUND – QUESTION SHEET · 15 т.

Бележка

Telescope: 150/750 Newton

Eyepieces: 25 mm, 10 mm, Barlow lens: 2x

Note:

  • Telescope is already polar aligned.
  • In case of bad sky conditions at low altitudes, task 1 and 2 will be replaced by alternative tasks 1 and 2 (see page 3). In this situation, the telescope assistant will cross out Tasks 1 and 2.
  • You have to use 25 mm eyepiece for tasks 1, 3 and 4.
  • For these tasks, if you finish before the allotted time, you must keep tracking the object with the telescope till the end of allotted time. The telescope assistant will check the object only at the end of the allotted time.
  • For task 2, we recommend using 10 mm eyepiece and Barlow 2x.
  • For task 5, you are not allowed to use the telescope.
PLANETARIUM ROUND – ANSWER SHEET

3 projected images with questions. Each part is 15 minutes long. Total time: 45 minutes.

Условие

available time: 10 minutes

In the upper box, the circle represents the disk of Saturn and the horizontal line is the E-W direction on the sky. Pay attention to direction of North (see top right corner). Mark position of Titan by a cross.

The smaller box on the bottom right corner of first box is for drawing the rings of Saturn. Again the circle represents the disk of Saturn. Draw the rings of Saturn in this box with the correct size and orientation. Both the outer and inner edges of the ring are necessary, no faint ring details or gaps are needed. Keep orientation of the image the same as the orientation in the upper box.

Estimate the angular distance (in arcsec) and position angle (in degrees) of Titan relative to the center of Saturn. You may do your calculations besides the answer.

Apparent major axis of the ring: 43"

Решение

Теми и трудност

Трудност: неоценена.

Слънчева система · Светлина и астрономически измервания · Свойства на планетите · Ъглов размер

Предпоставки: Гимназиална подготовка

Оригинал в Архива: Observational Problems.pdf · официални решения: NO-solution.pdf · допълнителни данни: PL-solution.pdf · допълнителни данни: PL-problem-final.pdf