As the view level increases, you will normally want to show fainter deepskyobjects.
在视场等级增加时,你通常希望看到更黯淡的深空天体。
2
All deepskyobjects have catalog Numbers - indeed, most have 'many' catalog Numbers as we've already seen!
所有的深空天体都有星表编号——事实上,正向我们前面看到的那样,大部分都有许多编号!
3
Many of the brightest deepskyobjects also have "popular names" by which they're often referred to, such as "Andromeda Galaxy", "North America Nebula", "Blinking Planetary", and so on.