-
Field Definition:
The acquisition date refers to the year, month, and day the photography was acquired.
- Format:
- YYYY/MM/DD
- YYYY = Year
- MM = Month
- DD = Day
-
Field Definition:
The name of the agency that acquired the photography and the EROS code associated with the agency.
-
Field Definition:
This flag identifies whether the entity has a browse image available. A browse image provides the user with a visual overview of an inventory item.
Note: Preview images are resampled from the original data and may not accurately represent the full resolution product.
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Field Definition:
The percent of the frame that is obscured by clouds.
- Values:
- 0 = 0 to 9 percent cloud cover
- 1 = 10 to 19 percent cloud cover
- 2 = 20 to 29 percent cloud cover
- 3 = 30 to 39 percent cloud cover
- 4 = 40 to 49 percent cloud cover
- 5 = 50 to 59 percent cloud cover
- 6 = 60 to 69 percent cloud cover
- 7 = 70 to 79 percent cloud cover
- 8 = 80 to 89 percent cloud cover
- 9 = 90 to 100 percent cloud cover
-
Field Definition:
The latitude and longitude are provided in decimal degrees for the following fields:
- Values:
- Scene Center Latitude and Longitude
- Northeast (NE) Corner Latitude and Longitude
- Northwest (NW) Corner Latitude and Longitude
- Southeast (SE) Corner Latitude and Longitude
- Southwest (SW) Corner Latitude and Longitude
- Latitude Format Decimal Degrees: -90.000 through 90.000
- Longitude Format Decimal Degrees: -180.000 through 180.000
- Number of decimal places will vary by dataset – check collection in EE.
-
Field Definition:
The latitude and longitude are provided in degrees, minutes, and seconds for the following fields:
- Values:
- Scene Center Latitude and Longitude
- Northeast (NE) Corner Latitude and Longitude
- Northwest (NW) Corner Latitude and Longitude
- Southeast (SE) Corner Latitude and Longitude
- Southwest (SW) Corner Latitude and Longitude
- Latitude Format:
- DDMMSS.SSH
- DD = Degree(s) with a range of 0 through 90
- MM = Minutes(s) with a range of 0 through 59
- SS.SS = Second(s) with a range of 0 through 59.99
- H = Hemisphere with N for north and S for south
- Longitude Format:
- DDDMMSS.SSH
- DDD = Degree(s) with a range of 0 through 180
- MM = Minute(s) with a range of 0 through 59
- SS.SS = Second(s) with a range of 0 through 59.99
- H = Hemisphere with E for east and W for west
-
Field Definition:
The Entity ID consist of a two digit data set designator and the Photo ID. The unique accession photo id, developed for each agency, allows identification within the EROS database that is comparable with the agency's original identification.
- Format:
- DDAPPPPPRRRFFFF
- DD = Data set designator (AR)
- A = Agency
- P = Project
- R = Roll
- F = Frame
- Example:
- AR5750022260121
-
Field Definition:
This field indicates if any specific events are associated with the imagery.
-
Field Definition:
The length and width of image frame contained on the roll of film.
- Values:
- Conversion: 1 inch = 25.4 millimeters
- Conversion Chart:
- .63 inches = 16mm
- 1.37 inches = 35mm
- 2.25 inches = 57mm
- 5.00 inches = 127mm
- 7.00 inches = 178mm
- 9.00 inches = 229mm
- 18.0 inches = 457mm
- 38.0 inches = 965mm
- 50.0 inches = 1270mm
- 60.0 inches = 1524mm
-
Field Definition:
The flying height above ground level, in feet, at which the frame was acquired.
-
Field Definition:
The focal length, in millimeters, of the sensor used to record the images on the film source. Conversion: 1 inch = 25.4 millimeters.
-
Field Definition:
The number assigned to a photographic frame on a roll of film.
-
Field Definition:
This field indicates if Higher Resolution Film Scans are currently available for the product
Note: EarthExplorer will have a shopping basket icon on the results page for Higher Resolution Film Scan images that are available for on-demand scanning. Film sources may not exist for collection that have been sent to NARA as a permanent records transfer, Under those circumstances, on-demand scans are not available from USGS/EROS.
-
Field Definition:
The image type resulting from the film type used.
- Values:
- 12 = Black & White Infrared
- 13 = Color Infrared
- 14 = Color
- 24 = Black & White
- Note: Images are captured as they appear on film and are representative of the full tonal range of the original film source. Images from color negative film are typically available as positive images, however, there are some medium resolution images that may need to be inverted.
-
Field Definition:
This field indicates if there are any other pertinent details associated with the imagery.
-
Field Definition:
The unique accession photo id, developed for each agency, allows identification within the EROS Data Base that is comparable with the agency's original identification.
- Format:
- APPPPPRRRFFFF
- A = Agency
- P = Project
- R = Roll
- F = Frame
- Example:
- 5750022260121
-
Field Definition:
The project assigned to this image.
-
Field Definition:
A rating of the overall image quality of the frame.
- Values:
- 0 = Very poor
- 2 = Poor
- 5 = Fair
- 8 = Good to Excellent
- NULL = No quality assigned
-
Field Definition:
The recording technique used in acquiring the image frame.
- Values:
- 1 = Vertical Cartographic
- 2 = Vertical Reconnaissance
- 16 = Low Oblique
- 17 = High Oblique
-
Field Definition:
The number assigned to the film roll.
-
Field Definition:
The scale of the image is the ratio of the distance on the image compared to the equivalent distance on the ground.
-
Field Definition:
The type of camera used to acquire the imagery.
-
Field Definition:
Amount of image (stereo) overlap in ten percent increments.
- Values:
- 0 = None
- 1 = 10%
- 2 = 20%
- 3 = 30%
- 4 = 40%
- 5 = 50%
- 6 = 60%
- 7 = 70%
- 8 = 80%
- 9 = 90%
-
Field Definition:
Strips were often important keys in creating line indexes for a film project. USGS/EROS has migrated to single frame metadata records rather than relying on historical photo indexes and map-line plots.
-
Field Definition:
The name of the file supplied by the vendor.
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