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The Gateway to Astronaut Photography of Earth
(NASA Crew Earth Observations)
Astronaut Photography of Earth - Display Record
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IdentificationMission: ISS005 Roll: E Frame: 9293 Mission ID on the Film or image: ISS005
Country or Geographic Name: SAUDI ARABIA
Features: SAND DUNES, DEPRESSIONS
Center Point Latitude: 27.1 Center Point Longitude: 45.1 (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:
CameraCamera Tilt: 46
Camera Focal Length: 800mm
Camera: E4: Kodak DCS760C Electronic Still Camera
Film: 3060E : 3060 x 2036 pixel CCD, RGBG array.
Percentage of Cloud Cover: 10 (0-10)
NadirGMT Date: 20020810 (YYYYMMDD) GMT Time: 103855 (HHMMSS)
Nadir Point Latitude: 29.1, Longitude: 48.1 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: Southwest
Sun Azimuth: 247 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 211 nautical miles (391 km)
Sun Elevation Angle: 62 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1253
CaptionsAd Dahna Sand Cordon, Saudi Arabia:
Driven by northwesterly winds, sands from northwest Saudi Arabia have accumulated in the center of the country as great rivers of dunes (cordons) that extend for hundreds of kilometers. About 320 kilometers northwest of Riyadh, the steep, almost cliff-like margin of the Ad Dahna cordon casts a shadow (right center; diagonally across the scene). Two types of dune surface appear: the tracery of numerous linear dunes (center) and a featureless sand sheet (lower left). Dark, older rocks (30-65 million years old—top right) underlie the sand sea and crop out northeast of the cordon. Convergent dry river beds appear top right.
Astronauts have obtained thousands of detailed images of the world’s remote deserts, helping scientists better understand local geomorphological features in a regional context.
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