Terra Instruments

Image from TERRA
Thu, 16 Jan 2020 10:13 EST

In the northern Mexican state of Cohuilla lies the Cuatro Cienegas Basin.

Image from TERRA
Fri, 10 Jan 2020 14:16 EST

These views of Earth from 2019 were taken with a variety of different science instruments and data tools, all helping us see our planet more clearly.

Image from TERRA
Tue, 07 Jan 2020 11:11 EST

Kangaroo Island, off the coast of Australia, has not been immune to the devastating bushfires that have been affected the eastern coast of the continent.

ASTER

Advanced Spaceborne Thermal Emission and Reflection Radiometer

Image from ASTER

This perspective image of a complex volcanic landscape in the Andean mountain range was assembled from data acquired by ASTER on April 9, 2003. ASTER produces images using infrared, red, and green wavelengths of light. Vegetated areas range in color from red to pink, snow is white, water is black, and bare rock is earth-toned.

The Advanced Spaceborne Thermal Emission and Reflection Radiometer obtains high-resolution (15 to 90 square meters per pixel) images of the Earth in 14 different wavelengths of the electromagnetic spectrum, ranging from visible to thermal infrared light. Scientists use ASTER data to create detailed maps of land surface temperature, emissivity, reflectance, and elevation.

ASTER is the only high spatial resolution instrument on the Terra platform. ASTER’s ability to serve as a ‘zoom’ lens for the other Terra instruments is particularly important for change detection, calibration/validation and land surface studies. Unlike the other instruments aboard Terra, ASTER will not collect data continuously; rather, it collects an average of 8 minutes of data per orbit. All three ASTER telescopes (VNIR, SWIR, and TIR) are pointable in the crosstrack direction. Given its high resolution and its ability to change viewing angles, ASTER produces stereoscopic images and detailed terrain height models.

The ASTER instrument was built in Japan for the Ministry of Economy, Trade and Industry (METI). A joint United States/Japan Science Team is responsible for instrument design, calibration, and data validation.

ASTER Web Site (Jet Propulsion Laboratory)

ASTER in the News