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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: ISS013 Roll: E Frame: 27871 Mission ID on the Film or image: ISS013
Country or Geographic Name: USA-OHIO
Features: LAKE ERIE, SUNGLINT, SHIP WAKES
Center Point: Latitude: 41.5 Longitude: -82.4 (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: 33
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)
GMT Date: 20060528 (YYYYMMDD) GMT Time: 171245 (HHMMSS)
Nadir Point Latitude: 43.0, Longitude: -83.7 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: Southeast
Sun Azimuth: 168 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 184 nautical miles (341 km)
Sun Elevation Angle: 68 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 3009
CaptionsSunglint Features, Lake Erie, United States
Three detailed south-looking images, taken one second apart near noon on May 28th, 2006, show features on the surface of Lake Erie, about 50 kilometers (30 miles) west of Cleveland, Ohio. The three images overlap slightly and are aligned similarly with south at image top. The top image shows the Vermilion River in strong sunglint (top left). Sunglint results when the Sunís light bounces off the waterís surface and into the satellite sensor or camera. The angular water bodies along the river are likely marinas. The main part of the image shows numerous ship wakes in the zone of partial glint around the disk of the Sunís reflection point. The wakes radiate from the mouth of the Vermilion River, with many of them heading northwest (towards the lower-right corner) in the direction of Detroit, Michigan.
On the left side of the second image, a thin, V-shaped wake curves back towards the shore (and appears near the lower left in the top image). This type of wake is typically created by a small, light craft such as a speedboat or sailboat under power. The third image shows similar tight-V-shaped wakes of other small craft. It also shows broad patterns of larger craft, probably large freighters carrying cargo, that displace and disturb more water during passage. These larger wakes are aligned with the direct course between Detroit (out of the image at lower right) and Cleveland (out of the image at top left). Some of the broad, ill-defined swaths of light and dark (aligned from lower left to upper right) are streaks of wind-roughened water, which reflect the Sun differently.
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Recommended Citation: Earth Science and Remote Sensing Unit, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .