Terra Instruments

Image from TERRA
Wed, 13 Nov 2019 13:51 EST

The state of New South Wales (NSW) in south eastern Australia is continuing to experience devastating bushfires due to the dry tinder-like atmosphere in the territory: high winds, dry lightning and continuing heat.

Image from TERRA
Fri, 08 Nov 2019 09:56 EST

Smoke billows from the scores of bushfires on Australia east coast in this image captured by NASA's Terra satellite on Nov. 08, 2019, using the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument onboard.

Image from TERRA
Tue, 05 Nov 2019 19:03 EST

The Earth-observing mission ECOSTRESS reveals how the massive rainforest fires this past August spread in dry areas visible only to this specialized sensor.

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