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Astronaut Photography of Earth - Display Record

ISS006-E-44689

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	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose	Comments
View	ISS006-E-44689.JPG	44906	349	540			Photographic Highlights	(540 px resized images)
View	ISS006-E-44689.JPG	63331	540	368		Yes	NASA's Earth Observatory web site	Color adjusted
View	ISS006-E-44689.JPG	63331	540	368	Yes	Yes	NASA's Earth Observatory web site
View	ISS006-E-44689.JPG	76686	639	435	No	No
View	ISS006-E-44689_2.JPG	108044	496	768			Photographic Highlights	(actual files used)
View	ISS006-E-44689.JPG	694049	1000	697	No	No	NASA's Earth Observatory web site

Large Images to Request for Downloading

	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose	Comments
Request	ISS006-E-44689.JPG	924142	1024	768		Yes	Presentation	Color adjusted
Request	ISS006-E-44689.JPG	1984680	3032	2064	No	No

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Electronic Image Data

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Identification

Mission: ISS006 Roll: E Frame: 44689 Mission ID on the Film or image: ISS006
Country or Geographic Name: BRAZIL
Features: SAO PAULO & SANTOS AT NIGHT
Center Point Latitude: -23.5 Center Point Longitude: -46.5 (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: 21
Camera Focal Length: 85mm
Camera: E4: Kodak DCS760C Electronic Still Camera
Film: 3060E : 3060 x 2036 pixel CCD, RGBG array.

Quality

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

Nadir

Date: 20030412 (YYYYMMDD)GMT Time: 023134 (HHMMSS)
Nadir Point Latitude: -23.9, Longitude: -45.2 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: West
Sun Azimuth: 207 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 216 nautical miles (400 km)
Sun Elevation Angle: -73 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1069

Captions

A favorite activity of astronauts and cosmonauts aboard the International Space Station is looking at the city lights below when the Station crosses the Earth’s dark side. The lights outline the densest population centers and coastlines, and suggest cultural patterns. Taking these low-light images using the equipment on board the Station has been challenging to the crew members because of the long exposure times required. Astronaut Don Pettit, who leaves the station for Earth today (May 3, 2003), has pioneered an approach using a home-made tracking system to track the ground as it moves relative to the Station, allowing him to acquire long-exposure images under low light conditions. Don’s ingenious “Barn-Door Tracker” is a camera mount with a rigged with a hand drill to create a motion tracking system (see http://science.nasa.gov/headlines/y2003/24mar_noseprints.htm for a description).

This image shows the sprawling urban footprint of São Paulo, Brazil, South America’s largest city with roughly 17 million people. The different colors (pink, white, and gray) define different types and generations of streetlights. The port of Santos, on the right side of the photograph, is also well defined by lights.

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