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STS51C-143-26

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Electronic Image Data

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Identification

Mission: STS51C Roll: 143 Frame: 26 Mission ID on the Film or image: 51C
Country or Geographic Name: USA-FLORIDA
Features: TALLAHASSEE
Center Point Latitude: 30.5 Center Point Longitude: -84.5 (Negative numbers indicate south for latitude and west for longitude)
Stereo: No (Yes indicates there is an adjacent picture of the same area)
ONC Map ID: JNC Map ID:

Camera

Camera Tilt: Low Oblique
Camera Focal Length: 250mm
Camera: LH: Linhof
Film: 5017 : Kodak, natural color positive, Ektachrome, X Professional, ASA 64, standard base.

Quality

Film Exposure: Normal
Percentage of Cloud Cover: 0 (0-10)

Nadir

Date: 198501__ (YYYYMMDD)GMT Time: (HHMMSS)
Nadir Point Latitude: , Longitude: (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction:
Sun Azimuth: (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: nautical miles (0 km)
Sun Elevation Angle: (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number:

Captions

STS51C-143-0026 Apalachicola Basin, West Florida January 1985
The most obvious landform in this low-oblique, northeast-looking photograph is the Apalachicola River drainage basin that has formed a peninsular protrusion into the Gulf of Mexico. From its major sediment plume, the Apalachicola River and its gray floodplain can be traced north to Lake Seminole. This area—from the eastern end of Choctawhatchee Bay (western edge of photograph) to the St. Johns River and Jacksonville, Florida (eastern edge of photograph)—comprises the coastal plains of the southeastern United States. Among the features in the area are several barrier islands, including elongated St. George Island (visible immediately south of the mouth of the Apalachicola River) and Dog Island (farther to the east); the Apalachicola National Forest (heavily forested area east of the river); other forested areas indicated by darker green; and pasturelands and cultivated fields (lighter tans and yellows). Although no details are discernible for Tallahassee, the state capital, its approximate site can be determined by the location of the four dark lakes in the center of the photograph. The smoke plumes near the eastern edge of the photograph provide a clue to the clarity of this photograph—strong northerly surface winds reduce the humid air mass that sometimes affects this area.

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