https://phys.org/news/2018-05-gemini-observatory-cloud-camera-captures.html > The camera used for the sequence looks eastward toward the town of Hilo (center), which is mostly obscured by clouds. The moon illuminates the landscape early in the sequence. Later, the setting moon (behind the camera) casts shadows of Gemini and several Maunakea observatories as well as a projection of the mountain onto the atmosphere. > The camera used for the video utilizes a wide-angle lens on a relatively ordinary single lens reflex (SLR) camera with its infrared filter removed. This combination causes the volcanic glow to take on a white/blue hue rather than the familiar red color of the lava.