Ou4: 巨乌贼星云
A starfield has a red nebula covering much of the frame but in the center, extending nearly vertically, is a blue nebula that appears shaped, to some, like a squid. Please see the explanation for more detailed information.
星场中有一个红色星云覆盖了大部分画面，但在中心，几乎垂直向外延伸的是一个蓝色星云，有些人觉得它的形状像乌贼。有关更多详细信息，请参阅说明。