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Astronaut Photography of Earth - Display Record

STS098-715B-84

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	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose	Comments
View	STS098-715B-84.JPG	23046	515	512	No	No		From ISD PhotoCDs
View	STS098-715B-84.JPG	79714	540	410	Yes	Yes	NASA's Earth Observatory web site
View	STS098-715B-84.JPG	327805	2210	1677	No	Yes	NASA's Earth Observatory web site

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	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose	Comments
Request	STS098-715B-84.JPG	86488	1030	1024	No	No		From ISD PhotoCDs
Request	STS098-715B-84_2.JPG	293656	2063	2048	No	No		From ISD PhotoCDs
Request	STS098-715B-84_3.JPG	856343	4127	4096	No	No		From ISD PhotoCDs
Request	STS098-715B-84.TIF	8099214	2210	1677	No	Yes	NASA's Earth Observatory web site

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Electronic Image Data

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Identification

Mission: STS098 Roll: 715B Frame: 84 Mission ID on the Film or image: STS98
Country or Geographic Name: CANADA-S
Features: ESTEVAN, POWER PLANTS
Center Point Latitude: 49.0 Center Point Longitude: -103.0 (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:

Camera

Camera Tilt: 23
Camera Focal Length: 250mm
Camera: HB: Hasselblad
Film: 5069 : Kodak Elite 100S, E6 Reversal, Replaces Lumiere, Warmer in tone vs. Lumiere.

Quality

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

Nadir

Date: 20010217 (YYYYMMDD)GMT Time: 232752 (HHMMSS)
Nadir Point Latitude: 49.1, Longitude: -104.4 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: East
Sun Azimuth: 243 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 196 nautical miles (363 km)
Sun Elevation Angle: 7 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 158

Captions

Snow and ice serve to accent human activities in this photograph taken by the Space Shuttle mission STS-98 crewmembers on February 17, 2001 (STS098-715B-84). The Souris River stretches across the photograph from left to right, with the upstream Rafferty Dam Reservoir frozen over on the far left. Two power plants, the Boundary Dam Power Station and the Shand Power Station, can be identified by the smoke plumes and shadows of those plumes. The river is frozen over upstream of the Boundary Dam Power Station, but thermal loading from the plants has warmed the water in the Boundary Dam Reservoir so that it remains nearly ice free. Downstream of the reservoirs, thermal loading is sufficient to maintain open flow in the Souris River.

The Estevan Coalfield is a formation of about 1500 square km that accounts for most of Saskatchewan’s coal production. The coal is mined from a trench at the surface, processed, and then used to fire the two power plants. These plants provide almost half of Saskatchewan’s electricity. Areas of active surface mining and processing appear black in the photograph; roads used for transporting the coal are also dusted black. Around the areas of the mines, a rough texture reveals other spoil piles and areas where underground mining used to take place. The city of Estevan (population about 12,000) is the medium-gray gridded area in the upper left of the photo.

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