There are 13 telescopes atop Mauna Kea, but while they’re all one of a kind in that regard, they vary in how they make observations. Some collect visual light, some infrared. Others are used for radio astronomy. I’d go in to more detail about this, but the science is as far over my head as the telescopes are in this photo!
Posted in response to Becky’s October Squares challenge theme of ‘Kind.’ See more responses here.