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| USGS › Geography › Earth Resources Observation and Science (EROS) Center |
ASTER sample image
(Oahu, Hawaii)
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of a number of instruments on board the Terra platform, which was launched in December 1999. ASTER provides fourteen spectral bands with 15- to 90-meter resolutions depending on the band(s). ASTER does not acquire data continuously; its sensors are activated only to collect specific scenes upon request.
The instrument consists of three separate telescopes; each provides a different spectral range and resolution. The VNIR (visible and near-infrared) sensor provides 4 bands at 15-meter resolution. The SWIR (short-wave infrared) sensor provides 6 bands at 30-meter resolution. The TIR (thermal infrared) sensor provides 5 bands at 90-meter resolution. The swath width for all sensors is 60 kilometers.
ASTER data distributed from the Land Processes Distributed Active Archive Center is available in the Universal Transverse Mercator (UTM) projection, with a resampling method of cubic convolution for daytime scenes and nearest neighbor for nighttime scenes. Files are in the HDF-EOS or GeoTIFF format with the exception of ASTER Level-3 products, which are available in GeoTIFF only.
The following products and services are available:
On-Demand Products are generated using corrected and updated ASTER Level-1A data to create the Level-1B data set, which in turn are used as the input for generating all the higher-level products except the ASTER DEM. (Level-1A granules are used to generate the ASTER DEM products.) All of these higher-level products are available upon request, subject to the appropriate band availability:
ASTER Scene Requests are also available because ASTER data is not acquired on a continuous basis, and the sensors collect specific scenes as tasked. Authorized investigators can request the acquisition of a particular scene(s), although each request is subject to approval by the ASTER Science Team. For information on obtaining ASTER request privileges, see the ASTER User Authorization site.
| ASTER Product | Price (FTP) | Handling Fee |
|---|---|---|
| ASTER Level 1A | $80 | $5 |
| ASTER Level 1B | $80 | $5 |
| AST_04 | $80 | $5 |
| AST_05 | $80 | $5 |
| AST_06VD | $80 | $5 |
| AST_06SD | $80 | $5 |
| AST_06TD | $80 | $5 |
| AST_07 | $80 | $5 |
| AST_07XT | $80 | $5 |
| AST_08 | $80 | $5 |
| AST_09 | $80 | $5 |
| AST_09XT | $80 | $5 |
| AST_09T | $80 | $5 |
| AST13POL | $80 | $5 |
| AST14DEM | $80 | $5 |
| AST14OTH | $80 | $5 |
| AST14DMO | $160 | $5 |
ASTER does not acquire data continuously; its sensors are activated to collect specific scenes upon request. Since data collection is scheduled from scene requests, some locations may not be available. Users will need to run a search to determine if a particular location has been acquired.
| Standard Products, On-Demand Products | WIST, GloVis |
|---|---|
| Standard Products (Level 1B only) | Data Pool |
| Accessibility FOIA Privacy Policies and Notices | |
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