ISS040-E-80797

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NASA Photo ID

ISS040-E-80797

Focal Length

50mm

Date taken

2014.07.25

Time taken

08:10:54 GMT

Resolutions offered for this image:
4256 x 2832 pixels 640 x 426 pixels

Cloud masks available for this image:
Binary Heatmap

Map Location
Image Details
Camera Information
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Spacecraft nadir point: 16.7° N, 11.1° E

Photo center point: 14.0° N, 14.0° E

Photo center point by machine learning:

Nadir to Photo Center: Southeast

Spacecraft Altitude: 225 nautical miles (417km)

Country or Geographic Name:

CHAD

Features:

LAKE CHAD, DUNES, WETLANDS, OPEN WATER, DESERT, CHAD BASIN

Features Found Using Machine Learning:

Cloud Cover Percentage:

50 (26-50)%

Sun Elevation Angle:

45°

Sun Azimuth:

79°

Camera:

Nikon D3S Electronic Still Camera

Focal Length:

50mm

Camera Tilt:

47 degrees

Format:

4256E: 4256 x 2832 pixel CMOS sensor, 36.0mm x 23.9mm, total pixels: 12.87 million, Nikon FX format

Film Exposure:

Additional Information

Width	Height	Annotated	Cropped	Purpose	Links
4256 pixels	2832 pixels	No	No		Download Image
640 pixels	426 pixels	No	No		Download Image

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Image Caption: ISS040-E-080797 (25 July 2014) --- From an altitude of 225 nautical miles, one of the Expedition 40 crew members aboard the International Space Station was looking almost straight down when he photographed this picture of Lake Chad, which is spread over parts of four African nations -- Chad, Niger, Cameroon and Nigeria. A 50mm focal length was used to capture the image.