Long Term Archive
ALI sample image 6,5,4 (RGB)
Mt Fuji, Japan
Hyperion sample image 215,54,18
Mt Fuji, Japan
The Earth Observing-1 (EO-1) satellite was launched November 21, 2000 as a one-year technology demonstration/validation mission. After the initial technology mission was completed, NASA and the USGS agreed to the continuation of the EO-1 program as an Extended Mission. The EO-1 Extended Mission is chartered to collect and distribute Hyperion hyperspectral and Advanced Land Imager (ALI) multispectral products according to customer tasking requests.
There are three instruments on board the EO-1 spacecraft:
The following products and services are available:
The USGS, in partnership with NASA, is providing a mechanism for the general public to specify location and timeframe for future acquisitions of data from the EO-1 satellite. There will be no charge for these tasking requests and they will be satisfied on a best effort basis as capacity is potentially available from EO-1. Users submitting tasking requests will be notified by email when their request has been completed, which is either when the area of interest was acquired or the acquisition window has expired. For further details, please reference the detailed procedure for selection posted at EO-1 USGS Tasker Help Page.
All Hyperion and Advanced Land Imager (ALI) data in the archive will be attempted to be processed to the Level 1Gst level of correction. If the scene fails the Level 1Gst processing level, it will be removed from the archive and will become unavailable. As of June 15th, 2009, not all of the EO-1 data has been processed; please continue to check back if the scene of your interest is not available. We will be making attempts to process the failed scene as time and workload permits; however there are no guarantees that all of the EO-1 scenes will be able to be processed.
|Map projection||UTM (default zone of the scene center coordinates)|
|Resampling method||CC (cubic convolution)|
|Image orientation||Map (north up)|
|Pixel size||30 meter (10 meter pan band)|
|Output media||Download (no charge)|
Level 1Gst: Absolute Geodetic Accuracy Specification
The Level 1Gst product will also include terrain correction through use of a digital elevation model (DEM). This addition will correct parallax error due to topographic relief and improve the overall band-to-band registration accuracy. The elevation data used for correction consist of the Shuttle Radar Topography Mission (SRTM) "Finished" data set and other elevation data as required.
Differences Between Level 1R and Level 1A Hyperion Data Sets (.pdf)
*Level 1R is referred to as Level 1 in PDF
Data Acquisition Requests (DARs) must be submitted online in order to collect a requested image for a specific area of interest. Please realize that scheduling conflicts and satellite maintenance may affect instrumental availability and there are no guarantees of acquisition. This is a low volume satellite and only one scene per path may be acquired.
All publicly available data products (ALI and Hyperion) may be searched and downloaded on EarthExplorer or GloVis. Please note that EO-1 does not acquire data continuously and its sensors are only activated to collect specific scenes upon request. Many locations may therefore not be available.
All EO-1 archived product images should be previewed prior to download. Browse images of all available scenes may be viewed by searching on EarthExplorer. For an alternative "quick and easy" browse image viewer, see GloVis.
Each Advanced Land Imager (ALI) browse image is generated from the Level 1 data and displayed as a 4,3,1 (RGB) band combination. Each band is linearly stretched between the 1% and 97% histogram values. The data is also reduced by a factor of 8 in each direction and jpeg compressed with a quality of 75%.
Each Hyperion browse image is created from the Level 0 (raw) data and displayed as a RGB (40:31:13) band combination. Hyperion browses have had the dark calibration subtracted and the gains have been applied. Each band is linearly stretched between the 1% and 97% histogram values. The data is then scaled from 12 bits to 8 bits. Finally, the data is reduced by a factor of 4 in each direction and jpeg compressed with a quality of 75%.
For information on how to cite USGS data plus guidance on usage restrictions,
please see our Data Citations and Use page at https://lta.cr.usgs.gov/citation.
Long Term Archive User Services
U.S. Geological Survey (USGS)
Earth Resources Observation and Science (EROS) Center
47914 252nd Street
Sioux Falls, SD 57198-0001
Phone Number: 605-594-6151
Toll Free: 800-252-4547
Business Hours: Monday thru Friday, 8:00 a.m. to 4:00 p.m., Central Time