ASTER
Hyperspectral imager
ASTER
(Advanced Spaceborne Thermal Emission and Reflection Radiometer)
is one of five remote sensing devises onboard Terra, a satellite
launched in December 1999 as part of NASA's Earth Observing System (EOS).
ASTER provides 15-90m imagery of the Earth in 14
spectral bands from visible to thermal infrared wavelengths (4 visible
& near infrared, 6 shortwave infrared and 5 thermal
infrared).
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ASTER
Specifications
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Imaging Mode
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VNIR
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SWIR
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TIR
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Spatial Resolution
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15 m
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30 m
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90 m
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Spectral Range
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520-600 nm
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1600-1700 nm
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8125-8475 nm
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630-690 nm
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2145-2185 nm
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8475-8825 nm
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760-860 nm*
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2185-2225 nm
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8925-9275 nm
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2235-2285 nm
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10250-10950 nm
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2295-2365 nm
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10950-11650 nm
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2360-2430 nm
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Launch
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December 18, 1999 (Terra)
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Mission Life
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Expected 6 years
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Orbit
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705 km 98.3 degree
sun-synchronous
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Nodal Crossing
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10:30 AM
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Revisit Time
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4-16 days
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Swath Width
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60 km
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Off-Nadir Imaging
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+/- 30 degrees
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Dynamic Range
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8 bits per pixel (VNIR, SWIR), 12 bits
per pixel (TIR)
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Stereo Imaging
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Yes
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Tasking
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No
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* Forward and backward looking
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