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The Gateway to Astronaut Photography of Earth
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Astronaut Photography of Earth - Display Record
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IdentificationMission: ISS009 Roll: E Frame: 10382 Mission ID on the Film or image: ISS009
Country or Geographic Name: USA-ARIZONA
Features: TUCSON, SANTA CRUZ R., MTS.
Center Point: Latitude: 32.0 Longitude: -111.0 (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: 24
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: 20040607 (YYYYMMDD) GMT Time: 171409 (HHMMSS)
Nadir Point Latitude: 33.1, Longitude: -110.1 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: Southwest
Sun Azimuth: 102 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 195 nautical miles (361 km)
Sun Elevation Angle: 61 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 3683
Tucson lies between the forested Catalina Mountains and the Tucson Mountains (dark reddish brown at the left image margin).The typical western North American cityscape is a pattern of regular north-south aligned rectangles outlined by major streets set one mile apart. Tucson’s Randolph golf course is the large, rectangular dark zone in the image center. The striking contrast between the golf course and its surroundings is due to dense grass cover maintained by frequent watering. Population growth in Tucson is not as rapid as that of Phoenix to the north, however it is still significant. Within the city limits, the population in the year 2000 was about 487,000 and was estimated to be over 514,000 in 2003.
The rectangular grid pattern disappears in the small streets of the original city center, situated along the Santa Cruz River (enters the view at lower left and exits in the top left corner). Moist air from Mexico and the Gulf of California frequently travels northwards along the Santa Cruz River corridor during the summer months. This moisture results in “monsoon” thunderstorms that help recharge the aquifers providing the majority of Tucson’s water.
Newer and less densely built-up neighborhoods in the foothills of the Catalina Mountains are designed to incorporate natural landscape features, and retain major washes with natural vegetation. This portion of the cityscape seen from space is consequently quite different from the main city grid. The foothills afford views of the city to the south and the mountains to the north and are major areas of development. Large white dots within the urban grid (blue arrows) are the reflective rooftops of shopping malls.
Tucson enjoys an important position along several major crossroads. Interstate highway I-10, which connects southern California to Florida, appears as a straight line running parallel with the Santa Cruz River northwest from Tucson in the direction of Phoenix. I-10 traverses a well-marked alluvial fan that extends from the Santa Rita Mountains to the southeast (fine drainage pattern lower center of the view) and exits the view at lower right. Highway I-19 is the straight line (lower left) leading south from the city center, between the Santa Cruz River and rectangular spoil heaps of nearby copper mines. I-19 connects Tucson with Nogales on the Mexican border.
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Recommended Citation: Earth Science and Remote Sensing Unit, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .