Sensors

No. A photographic enlargement only appears to show more detail than a 9-by-9 inch photograph. Photographic resolution (or image resolution) deteriorates with each enlargement factor.Photographic reproduction of images from the USGS film archives ceased...
Landsat 8 carries two push-broom instruments: the Operational Land Imager (OLI), and the Thermal Infrared Sensor (TIRS).The spectral bands of the OLI sensor, while similar to Landsat 7’s ETM+ sensor, provides enhancement from prior Landsat instruments,...
The Landsat 8 and Landsat 7 satellites both maintain a near-polar, sun-synchronous orbit, following the World Reference System (WRS-2). They each make an orbit in about 99 minutes, complete over 14 orbits per day, and provide complete coverage of the...
Landsat 7 ETM+ SLC-off data refers to all Landsat 7 images collected after May 31, 2003, when the Scan Line Corrector (SLC) failed. These products have data gaps, but are still useful and maintain the same radiometric and geometric corrections as data...
The Landsat Program is a series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.In 1972, the launch of ERTS-1 (Earth Resources Technology Satellite, later renamed Landsat 1) started the era of a series of...
National Land Imaging (NLI) was an interagency effort (begun in 2006) to develop a long-term plan to achieve technical, financial, and managerial stability for operational land imaging. In August 2007, the working group released the recommended plan in a...
Landsat image data processing takes 1 to 5 days. Once a request is submitted and the data is processed, an email notification containing the direct download URL is sent.After Landsat scenes are processed, they are also made available for immediate...
Scene acquisition times for Landsat images are listed in the online metadata files, which can be accessed by searching the particular scene on EarthExplorer or GloVis. Scenes processed after February 9, 2009 also include the acquisition times in the .mtl...
LandsatLook images are full resolution .jpeg files that are included as options when downloading Landsat data from EarthExplorer, GloVis, or via the LandsatLook Viewer.The following products are available, and are useful for image selection and visual...
Landsat 8 data products are processed to be consistent with the existing Landsat 1 to Landsat 7 Level-1 data products.The Level 1 Product and LandsatLook (full-resolution jpg) files are available for download at no charge from GloVis, EarthExplorer or...