The true-color image at
left is a downward-looking (nadir) view of the area around the San
Cristobal volcano, which erupted the previous day. This image is oriented
with east at the top and north at the left. The right image is a stereo
anaglyph of the same area, created from red band multi-angle data taken
by the 45.6-degree aftward and 70.5-degree aftward cameras on the Multi-Angle
Imaging Spectro-Radiometer (MISR) instrument on NASA's Terra satellite.
View this image through red/blue 3D glasses, with the red filter over the
left eye. A plume from San Cristobal (approximately at image center) is
much easier to see in the anaglyph, due to 3 effects: the long viewing path
through the atmosphere at the oblique angles, the reduced reflection from
the underlying water, and the 3D stereoscopic height separation. In this
image, the plume floats between the surface and the overlying cumulus clouds.
A second plume is also visible in the upper right (southeast of San Cristobal).
This very thin plume may originate from the Masaya volcano, which is
continually degassing at a slow rate. The spatial resolution is 275 meters
(300 yards).
Image Credit: NASA/GSFC/JPL, MISR Science Team
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