Corona vs. Halo

The video tutorial explains how observing the moon can reveal different atmospheric phenomena such as lunar halos and coronas. A lunar halo, seen around the bright moon, indicates the presence of high cirrus clouds made of ice crystals. In contrast, a corona, which appears as a bright fuzzy area, suggests middle-level altocumulus clouds composed of water droplets. Historically, these observations have been used for weather forecasting. While theoretically possible, seeing both a corona and a lunar halo simultaneously is rare due to the specific cloud conditions required.

What types of clouds are associated with Halos and coronas, and what are their characteristics?

In what conditions is it theoretically possible to see both a lunar Halo and a corona at the same time?