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Photographing the Earth from the International Space Station

Astronaut Photography of Earth - Display Record

ISS018-E-6540

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File NameFile Size (bytes)WidthHeightAnnotatedCroppedPurposeComments
View ISS018-E-6540.JPG 53222640437 No No
View ISS018-E-6540.JPG 231044540335 Yes Yes NASA's Earth Observatory web site
View ISS018-E-6540.JPG 43447430722098 No No
View ISS018-E-6540.JPG 6372331000620 No Yes NASA's Earth Observatory web site

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Electronic Image Data

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Identification

Mission: ISS018 Roll: E Frame: 6540 Mission ID on the Film or image: ISS018
Country or Geographic Name: EGYPT
Features: SAQQARA, PYRAMIDS, ABU SIR
Center Point: Latitude: 29.9 Longitude: 31.2 (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: 13
Camera Focal Length: 800mm
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: 20081031 (YYYYMMDD) GMT Time: 075630 (HHMMSS)
Nadir Point Latitude: 30.5, Longitude: 31.6 (Negative numbers indicate south for latitude and west for longitude)

Nadir to Photo Center Direction: Southwest
Sun Azimuth: 148 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 189 nautical miles (350 km)
Sun Elevation Angle: 39 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 995

Captions

Cities of the Dead, Nile River Delta, Egypt

The ancient pharaohs (kings) and queens of Egypt established several royal cemeteries, along the Nile River valley. On the western riverbank, these necropoli (cities of the dead) were built on a gravelly desert plateau formed of limestone and clay overlooking the river. Several scarps (cliffs) are visible at image lower left. The most widely recognized features of royal Egyptian necropoli are pyramids, which frequently served as both tombs and monuments for their occupants. This detailed astronaut photograph illustrates a portion of the Nile Delta that includes two royal cemetery complexes, Abusir and Saqqara-North.

The present day village of Abusir is clearly visible as a grey-white irregular patch of urban surfaces that contrasts with green agricultural fields of the Nile Delta and tan desert sands and gravels to the west. The historic necropolis of Abusir is located to the northwest of the village at image top center. Three pyramids are readily visible in the image, all built by kings of the Fifth Dynasty (2,465-2,323 BC): Sahure, Niuserre, and Neferirkare. The site of Abusir was likely chosen due to the existence of a lake-now dry-that facilitated transport of building materials for the pyramids and other structures.

The northern portion of the large necropolis of Saqqara is also visible to the south-southwest (image right) of the village of Abusir. The largest pyramid in this complex is that of Djoser, a king of the Third Dynasty (2,650-2,575 BC). Other readily visible pyramids include that of Userkaf (Fifth Dynasty) and Teti (Sixth Dynasty: 2,323-2,150 BC), attesting to the long history of use of the Saqqara necropolis. Astronauts have also taken detailed imagery of other necropolis sites along the Nile River delta such as Giza and Dashur.

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