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Photographing the Earth from the International Space Station

Astronaut Photography of Earth - Display Record

ISS026-E-5121

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File NameFile Size (bytes)WidthHeightAnnotatedCroppedPurposeComments
View ISS026-E-5121.JPG 64818640437 No No
View ISS026-E-5121.JPG 182000540360 Yes Yes NASA's Earth Observatory web site
View ISS026-E-5121_2.JPG 197743540359 Yes Yes NASA's Earth Observatory web site
View ISS026-E-5121.JPG 5254501000664 No Yes NASA's Earth Observatory web site
View ISS026-E-5121.JPG 89453142882929 No No

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Electronic Image Data

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Identification

Mission: ISS026 Roll: E Frame: 5121 Mission ID on the Film or image: ISS026
Country or Geographic Name: BAHAMAS
Features: LONG ISLAND, TIDAL FLATS, SCOUR CHANNELS
Center Point: Latitude: 23.2 Longitude: -75.2 (Negative numbers indicate south for latitude and west for longitude)

Stereo: (Yes indicates there is an adjacent picture of the same area)
ONC Map ID: JNC Map ID:

Camera

Camera Tilt: 21
Camera Focal Length: 800mm
Camera: N2: Nikon D2Xs
Film: 4288E : 4288 x 2848 pixel CMOS sensor, RGBG imager color filter.

Quality

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

Nadir

GMT Date: 20101127 (YYYYMMDD) GMT Time: 185538 (HHMMSS)
Nadir Point Latitude: 22.5, Longitude: -76.2 (Negative numbers indicate south for latitude and west for longitude)

Nadir to Photo Center Direction: Northeast
Sun Azimuth: 217 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 190 nautical miles (352 km)
Sun Elevation Angle: 37 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 920

Captions

Tidal Flats and Channels, Long Island, Bahamas

The islands of the Bahamas are situated on large depositional platforms—the Great and Little Bahama Banks—composed mainly of carbonate sediments ringed by reefs. The islands are the only parts of the platform currently exposed above sea level. The sediments were formed mostly from the skeletal remains of organisms settling to the sea floor; over geologic time, these sediments consolidated to form carbonate sedimentary rocks such as limestone.

This astronaut photograph provides a view of tidal flats and channels near Sandy Cay, on the western side of Long Island and along the eastern margin of the Great Bahama Bank. The continuously exposed parts of the island are brown, a result of soil formation and vegetation growth. To the north of Sandy Cay, an off-white tidal flat composed of carbonate sediments is visible; light blue-green regions indicate shallow water on the tidal flat. The tidal flow of seawater is concentrated through gaps in the land surface, leading to the formation of relatively deep channels that cut into the sediments. The channels and areas to the south of the island have a vivid blue color that indicates deeper water.

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