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Photographing the Earth from the International Space Station

Astronaut Photography of Earth - Display Record

ISS028-E-10162

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File NameFile Size (bytes)WidthHeightAnnotatedCroppedPurposeComments
View ISS028-E-10162.JPG 63718640425 No No
View ISS028-E-10162.JPG 232208540359 Yes Yes NASA's Earth Observatory web site
View ISS028-E-10162.JPG 6379761000664 No Yes NASA's Earth Observatory web site
View ISS028-E-10162.JPG 104716542882848 No No

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Electronic Image Data

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Identification

Mission: ISS028 Roll: E Frame: 10162 Mission ID on the Film or image: ISS028
Country or Geographic Name: CANADA-O
Features: SAULT ST MARIE, ST JOSEPH ISLAND, LAKE HURON, LAKE SUPERIOR
Center Point: Latitude: 46.3 Longitude: -84.1 (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:

Camera

Camera Tilt: 52
Camera Focal Length: 110mm
Camera: N2: Nikon D2Xs
Film: 4288E : 4288 x 2848 pixel CMOS sensor, RGBG imager color filter.

Quality

Film Exposure:
Percentage of Cloud Cover: 10 (0-10)

Nadir

GMT Date: 20110629 (YYYYMMDD) GMT Time: 212345 (HHMMSS)
Nadir Point Latitude: 48.2, Longitude: -80.1 (Negative numbers indicate south for latitude and west for longitude)

Nadir to Photo Center Direction: West
Sun Azimuth: 264 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 205 nautical miles (380 km)
Sun Elevation Angle: 37 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 289

Captions

Sault Ste Marie, Ontario and Michigan

The twin cities of Sault Ste Marie are located across the St. Mary’s River that forms part of the international boundary between Canada (Province of Ontario) and the United States (State of Michigan). This astronaut photograph highlights the two cities, together with the region of lakes and islands that separates Lakes Huron and Superior, two of the Great Lakes of North America. Smaller lakes include Lake George to the west; the large forested islands of St. Joseph and Drummond are visible at image upper left.

The Sault Ste Marie urban areas (image lower left) have a distinctive gray to white coloration in the image, contrasting with the deep green of forested areas in Ontario and the lighter green of agricultural fields in Michigan. The coloration of water surfaces in the lakes and rivers varies from blue to blue-green to silver, and is likely caused by varying degrees of sediment and sunglint – light reflecting back to the astronaut observer on the International Space Station from the water surface, much as light reflects from a mirror.

Prior to formalization of the US/Canada border in 1817, Sault Ste Marie was a single community. Archeological evidence suggests that the region had been occupied by Native Americans at least five hundred years ago. A mission – the first European settlement in Michigan - was established there in 1668 by the French Jesuit Father Jacques Marquette. Today, shipping locks and canals in both urban areas are an important part of the Great Lakes shipping traffic system.


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