Jingsong Guo：创建页面，内容为“==英文题目== TASK 2: OBSERVATION OF SATURN available time: 10 minutes 15 points • In the upper box, the circle represents the disk of Saturn and the hori…”

2019-08-25T15:07:41Z

创建页面，内容为“==英文题目== TASK 2: OBSERVATION OF SATURN available time: 10 minutes 15 points • In the upper box, the circle represents the disk of Saturn and the hori…”

新页面

==英文题目==

TASK 2: OBSERVATION OF SATURN

available time: 10 minutes

15 points

• 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"

==中文题目==

任务二：观测土星

可用时间：10分钟

15分

•在上面的框中，圆圈代表土星的视圆面，水平线代表天空中的东西方向。
注意北的方向(见右上角)。

用十字标出土卫六的位置。

•第一个框右下角的小框是用来画土星光环的。圆圈也代表土星的视圆面。
在这个框里用正确的大小和方向画出土星的光环。

环的内外边缘都是必要的，不需要暗淡的的环细节或环缝。

保持图像的方向与上面框中的方向相同。

•估算土卫六相对土星中心的角距离(以角秒为单位)和位置角(以度为单位)
。除了答案外，你还可以在旁边做你的计算。

光环长轴的视大小:43”

2019年IOAA夜间观测第2题：观测土星 - 版本历史

Jingsong Guo：创建页面，内容为“==英文题目== TASK 2: OBSERVATION OF SATURN available time: 10 minutes 15 points • In the upper box, the circle represents the disk of Saturn and the hori…”