The big question is: Did he use a Camera Obscura, an optical device to paint this?

他这幅用了暗箱这种学装置？

In the case of a telescope, the “bucket” is an optical device like a lens or a mirror that collects light.

对望远来说，“水桶”就一种像透单面一样收集线的学装置。

Scientists at the Luxembourg Institute of Science and Technology list for short combined a specially designed spectrometer with a commercially available helium ion microscope to build a very high-resolution optical device capable of looking into these tiny worlds.

通过将特殊定制的分市面上的氦离子显微相结合，来自卢森堡理工学院的科学家制造了一个能够探索微型世界的学器。