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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: ISS010 Roll: E Frame: 24596 Mission ID on the Film or image: ISS010
Country or Geographic Name: USA-TEXAS
Features: DALLAS, TRINITY R., RES., GLINT
Center Point: Latitude: 33.0 Longitude: -97.0 (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: 12
Camera Focal Length: 180mm
Camera: E4: Kodak DCS760C Electronic Still Camera
Film: 3060E : 3060 x 2036 pixel CCD, RGBG array.
Percentage of Cloud Cover: 10 (0-10)
GMT Date: 20050414 (YYYYMMDD) GMT Time: 175157 (HHMMSS)
Nadir Point Latitude: 33.3, Longitude: -96.4 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction:
Sun Azimuth: 160 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 191 nautical miles (354 km)
Sun Elevation Angle: 65 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 570
The Dallas-Fort Worth metropolitan area is the largest in Texas, with an approximate population of 6 million people in 2005. Founded by John Neely Bryan in 1841, the city became the center for the United States oil economy with the discovery of oilfields to the east of the city in 1930. The darkest day in the city's history occurred on November 22, 1963 when President John F. Kennedy was assassinated while traveling by motorcade through Dealey Plaza. The Dallas-Forth Worth region today is a major corporate, banking, and technological center.
This astronaut photograph captures the northwestern portion of the metropolitan area. Standing water bodies such as Lake Lewisville and Grapevine Lake are highlighted by sunglint, where the surface of the water acts as a mirror reflecting sunlight back towards the astronauts in the International Space Station (read Sunglint in Astronaut Photography of Earth for a more detailed explanation of sunglint). Using the sunglint to define edges of water helps when mapping water bodies and stream courses on a landscapeónote the region of small ponds to the north of Grapevine Lake highlighted by sunglint. Images such as these help characterize surface hydrology and areas of potential flooding hazard.
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Recommended Citation: Earth Science and Remote Sensing Unit, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .