Observation
noun, verbal noun
View and measure what you are watching. This is observation. It is no mere viewing, it is more than that.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
南極観測隊のメンバーになるにはどうすればいいですか。
How can I become a member of Antarctic exploration party?