A Look from LEISA

Explanation: On February 24, 2007, the LEISA (pronounced "Leesa") infrared spectral imager in the New Horizons Ralph instrument observed Jupiter in 250 narrow spectral channels, three of which are shown here. Features that are bright in all three pictures come from high-altitude clouds. Features that are bright in the 1.27 and 1.88 µm channels, but darker in the 1.53-µm channel come from lower clouds. For example, there is an isolated circular feature (the "Little Red Spot") in the lower left of the 1.53-µm image. In the 1.27 and 1.88 µm data, this circular feature is surrounded by other structures. The implication is that the "Little Red Spot" is caused by a system that extends far up into the atmosphere, while other structures are lower.


Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.