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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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Pre-catalog InformationCamera as Recorded in the Camera File: NIKON D3S S/N: 2053892
Camera Focal Length: 24mm
GMT Date: 20120202 (YYYYMMDD) GMT Time: 050708 (HHMMSS)
Nadir Latitude: 39.5 Nadir Longitude: -84.1 (Negative numbers indicate south for latitude and west for longitude)
Spacecraft Altitude: 204 nautical miles
Sun Azimuth: 334 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Sun Elevation Angle: -66 (Angle in degrees between the horizon and the sun, measured at the nadir point)
CaptionsISS030-E-062540 (2 Feb. 2012) --- This nighttime image, photographed by one of the members of the Expedition 30 crew from the International Space Station, features the Greater Chicago Metropolitan Area strung along the southwest shore of Lake Michigan. The region is partially covered by clouds, probably low-hanging, or even fog. Meteorologists say there is a fine line between low thin clouds and fog. Fog is not common in the Great Lakes area this time of the year (usually too windy), but this has been an exceptionally mild winter. The faint gold line of airglow caused by ultraviolet radiation exciting the gas molecules in the upper atmosphere parallels the horizon or Earth limb. Minor auroral activity (Borealis) is visible in upper right.
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Recommended Citation: Earth Science and Remote Sensing Unit, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .