



Photographer: Attilio Bruno Veratti

Summary Authors: Attilio Bruno Veratti; Eduardo Azambuja

Featured above is the Hills complex of Sugarloaf and Urca in Rio de Janeiro, Brazil, as observed at night in long-wave infrared light (7.5 to 14 micrometers) -- emitted radiation. Three different palettes are shown all in the same wavelength range. The photo at the bottom is a similar view in visible light. Note that Sugarloaf is at far left. The top panel shows what we would see if our eyes were sensitive to long-wave infrared light. The second panel was processed using a sequential high contrast rainbow palette. Areas of vegetation in the hills appear in green. The third panel was processed with a qualitative palette highlighting areas of the most intense thermal emission. These are rocky surfaces and areas devoid of vegetation that readily accumulate heat during the daylight hours -- shown on this rendition in gold and purple. Thermal images taken in May 2015, visible image taken on August 4, 2015.

Photo Details: FLIR T640 camera; Lens: 25° Ge, Software: Tools + and IR Palettes, Palettes: ICON D02, ICON S81rbhc and ICON C03.