2018年IOAA日间观测第1题

英文题目

O1 (40 points) Figure 1 is a whole sky star chart of Yanqing, Beijing at 20:30 tonight (UTC+8) with the limit magnitude = 5m (m = magnitude). Four stars (about 1m - 3m) and one planet (brighter than 2m) are missing in this chart. In the chart, the distance from the centre is in proportion to zenith distance

(1) (20 points) Draw a cross (X) on the location of each missing star and mark “T” on the chart, and draw a cross (X) on the location of the missing planet and mark “P” on the chart.

(2) (5 points) Please mark the orientation of the star chart with “N” “E” “S” “W” at the edge of the star chart.

(3) (10 points) On the chart, the celestial equator passes through many constellations. Please write down the name of any five of these constellations (IAU codes).

(4) (5 points) Using the star chart, estimate the altitude of Aldebaran (α Tau), to the nearest degree.

中文题目

观测第一题（40分）

图一是今晚（大约为11月7日 小编记不得了）北京延庆8：30（UTC+8时区）一幅极限星等为5等的星图。 图上四颗1-3等的恒星和一颗亮于2等的行星丢失掉了。在本图中，到中心的距离与天顶距呈正比例关系

（1）（20分）在星图上丢失的恒星的位置画X并且在旁边标上“T”，并在丢失的行星的位置画X并且在旁边标上“P”

（2）（5分）请在星图边缘用“N”“E”“S”“W”标记星图的方向。

（3）（10分）在星图上，天赤道经过许多星座。请写下其中五个星座的名字(用IAU代码)。

（4）（5分）使用星图,估计毕宿五的高度(αTau),精确到度。