Imagery

The public may download digital aerial photography products at no cost from the Earth Resources Observation and Science Center (EROS). For those who specifically need paper or film products, there is a list of USGS Business Partners who provide aerial...
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...
Aerial photographs and satellite imagery for the United States are available in many formats as described on the EROS Web site: http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/Aerial_Products Digital data can be downloaded for free.  ...
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,...
It will probably take approximately 5 years to digitize the archive. A priority scheme is being developed and will be made available to the public at a later date.
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...
A USGS DRG is a scanned image of a U.S. Geological Survey (USGS) topographic map. The term refers to products created in the period 1995-2000 that conform to a specific technical standard. This product series is now inactive, replaced by the larger and...
SDTS transfers are the data sets used to exchange spatial data between different computer systems. SDTS transfers consist of a series of modules (the SDTS's logical grouping of related data) encoded into files using ISO 8211 standard, 'Specification for...
Digital Line Graphs (DLG) are an early GIS vector data product. The product line has been inactive since the mid 1990s, and has been superceded by more modern GIS datasets.  
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...