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Photographing the Earth from the International Space Station

Astronaut Photography of Earth - Display Record

ISS027-E-5274

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File NameFile Size (bytes)WidthHeightAnnotatedCroppedPurposeComments
View ISS027-E-5274.JPG 63000640437 No No
View ISS027-E-5274.JPG 159024540359 Yes Yes NASA's Earth Observatory web site
View ISS027-E-5274.JPG 4327471000664 No Yes NASA's Earth Observatory web site
View ISS027-E-5274.JPG 107552642882929 No No

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Electronic Image Data

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Identification

Mission: ISS027 Roll: E Frame: 5274 Mission ID on the Film or image: ISS027
Country or Geographic Name: CHINA
Features: TIAN SHAN RANGE, PEAK 6231, XUELIAN FENG, GLACIERS
Center Point: Latitude: 42.3 Longitude: 80.9 (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: 44
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: 25 (11-25)

Nadir

GMT Date: 20110316 (YYYYMMDD) GMT Time: 042723 (HHMMSS)
Nadir Point Latitude: 40.0, Longitude: 79.0 (Negative numbers indicate south for latitude and west for longitude)

Nadir to Photo Center Direction: Northeast
Sun Azimuth: 132 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 184 nautical miles (341 km)
Sun Elevation Angle: 37 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 2626

Captions

Central Tien Shan, People’s Republic of China

The Tien Shan (or “celestial mountains” in Chinese) is one of the largest continuous mountain ranges in the world, extending approximately 2500 kilometers roughly east-west across Central Asia. This astronaut photograph provides a detailed view of part of the central Tien Shan, located approximately 64 kilometers east of where the borders of China, Kyrgyzstan, and Kazakhstan meet. While the image looks like it might have been taken from an airplane, it was taken from the International Space Station (ISS) at an altitude of 341 kilometers. The distance between the ISS ground track position (approximately 304 kilometers to the southwest) and the imaged area produces an oblique – looking outwards an angle, rather than straight down – view that, together with shadowing of valleys, accentuates the mountainous topography.

Like the Himalayas to the south, the uplift of the Tien Shan results from the ongoing collision between the Eurasian and Indian continental tectonic plates. The rugged topography of the range is the result of subsequent erosion by water, wind, and in the highest parts of the range, active glaciers. Two types of glaciers are visible in the image; cirque glaciers occupy amphitheater-like depressions on the upper slopes of the mountains, and feed ice downslope to aggregate into large valley glaciers such as the one visible at image center. Low clouds obscure an adjacent valley and glaciers to the north (image upper left).

Two high peaks of the central Tien Shan are identifiable in the image. Xuelian Feng has a high summit of 6, 527 meters above sea level. To the east, the aptly-named Peak 6231 has summit of 6231 meters above sea level.


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