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Astronaut Photography of Earth - Display RecordISS005-E-20451Low-resolution Browse Image(Most browse images are not color adjusted.)ImagesConditions for Use of Images >>Image Transformation Tutorial >> Saving, Color Adjusting, and Printing Images >> Images to View on Your Computer Now
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Download a Keyhole Markup Language (KML) file for use in Google Earth. Electronic Image DataCamera Files >> No sound file available.IdentificationMission: ISS005 Roll: E Frame: 20451 Mission ID on the Film or image: ISS005Country or Geographic Name: CHAD Features: EMI KOUSSI, CRATER DETAIL Center Point Latitude: 20.0 Center Point Longitude: 18.5 (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: CameraCamera Tilt: 31Camera Focal Length: 800mm Camera: E4: Kodak DCS760C Electronic Still Camera Film: 3060E : 3060 x 2036 pixel CCD, RGBG array. QualityFilm Exposure:Percentage of Cloud Cover: 10 (0-10) NadirDate: 20021111 (YYYYMMDD)GMT Time: 082600 (HHMMSS)Nadir Point Latitude: 20.0, Longitude: 20.6 (Negative numbers indicate south for latitude and west for longitude) Nadir to Photo Center Direction: West Sun Azimuth: 141 (Clockwise angle in degrees from north to the sun measured at the nadir point) Spacecraft Altitude: 206 nautical miles (382 km) Sun Elevation Angle: 43 (Angle in degrees between the horizon and the sun, measured at the nadir point) Orbit Number: 2702 CaptionsEmi Koussi is a high volcano that lies at the south end of the Tibesti Mountains in the central Sahara in northern Chad. The volcano is one of several in the Tibesti massif, and reaches 3415 m in altitude, rising 2.3 km above the surrounding sandstone plains. The volcano is 65 km wide.This view of the Emi Koussi caldera was taken with an 800 mm lens on November 21, 2002. It is detailed to the point that it doesn’t include the entire 10-km diameter of the caldera, but reveals individual lava strata within the walls of the summit cliffs. Nested within the main caldera is a smaller crater that contains white salts of a dry lake at its lowest point. Here too, strata are visible in the walls of the smaller crater. The smaller crater is surrounded by a region of darker rocks—a geologically young dome of lava studded with several small circular volcanic vents. Emi Koussi has been used as a close analog to the famous Martian volcano Elysium Mons (http://www.msss.com/mars_images/moc/7_10_98_elysium_rel/). One of the most important morphological differences between volcanoes on Mars and Earth is the widespread furrowing of the surface due to flowing water on terrestrial volcanoes. The furrows are shallow valleys. Larger channels have a different origin. Major channels can be seen on volcanoes on both planets and indicate low points in caldera rims where lava spilled out of pre-collapse craters. Download Packaged File. This option downloads the following items, packaged into a single file, if they are available:
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