Often, the first question that people interested in buying a thermal imaging camera ask is “How far can I see?” This is a very reasonable question to ask, but it defies any simple answer. All FLIR Systems thermal imaging cameras are able to see the sun which is more than 146 million kilometers away from Earth.
What is the range of an infrared camera?
Instead of the 400–700 nanometre (nm) range of the visible light camera, infrared cameras are sensitive to wavelengths from about 1,000 nm (1 micrometre or μm) to about 14,000 nm (14 μm). The practice of capturing and analyzing the data they provide is called thermography.
How far can thermal cameras see underground?
History buffs using the cameras, which can scan objects as deep as 25 feet underground or find moisture seeping into walls, took images of the underground features left by the camp.May 14, 2000