STS068-260-73
| NASA Photo ID | STS068-260-73 |
| Focal Length | 250mm |
| Date taken | 1994.10.10 |
| Time taken | 20:38:05 GMT |
Resolutions offered for this image:
540 x 424 pixels 540 x 855 pixels 5700 x 5900 pixels 500 x 518 pixels 640 x 480 pixels 1309 x 1298 pixels 1274 x 1284 pixels
540 x 424 pixels 540 x 855 pixels 5700 x 5900 pixels 500 x 518 pixels 640 x 480 pixels 1309 x 1298 pixels 1274 x 1284 pixels
Cloud masks available for this image:
Spacecraft nadir point: 48.1° S, 74.7° W
Photo center point: 47.0° S, 74.0° W
Photo center point by machine learning:
Photo center point: 47.0° S, 74.0° W
Photo center point by machine learning:
Nadir to Photo Center: Northeast
Spacecraft Altitude: 111 nautical miles (206km)
Country or Geographic Name: | CHILE |
Features: | LAKE SAN RAFAEL, SAN QUINTIN GLACIER |
| Features Found Using Machine Learning: | |
Cloud Cover Percentage: | 0 (no clouds present) |
Sun Elevation Angle: | 26° |
Sun Azimuth: | 290° |
Camera: | Hasselblad |
Focal Length: | 250mm |
Camera Tilt: | 35 degrees |
Format: | 5046: Kodak, natural color positive, Lumiere 100/5046, ASA 100, standard base |
Film Exposure: | Normal |
| Additional Information | |
| Width | Height | Annotated | Cropped | Purpose | Links |
|---|---|---|---|---|---|
| 540 pixels | 424 pixels | Yes | Yes | NASA's Earth Observatory web site | Download Image |
| 540 pixels | 855 pixels | Yes | Yes | NASA's Earth Observatory web site | Download Image |
| 5700 pixels | 5900 pixels | No | No | Download Image | |
| 500 pixels | 518 pixels | No | No | Download Image | |
| 640 pixels | 480 pixels | No | No | Download Image | |
| 1309 pixels | 1298 pixels | No | No | Download Image | |
| 1274 pixels | 1284 pixels | No | No | Download Image |
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Image Caption: The San Quintin Glacier is the largest outflow glacier of the Northern Patagonian Ice Field in southern Chile. Its terminus is a piedmont lobe just short of the Golfo de Penas on the Pacific Ocean and just north of 47degS. Like many glaciers worldwide during the twentieth century, San Quintin appears to be losing mass and possibly retreating. Such a change is evident in these two photographs taken by astronauts only seven years apart. The first was taken by the crew of STS-068 in October 1994 and the second by the Increment 4 crew of the International Space Station in February 2002 (ISS004-E-7267).
Even with the reversal of season and different lighting conditions of these two acquisitions, a loss of mass and change of structure, particularly in the lobe, are strikingly evident in these comparative photos. Glaciers are one of the special topics identified as scientific objectives for monitoring with photography from the International Space Station. Astronaut photography is a complimentary source of remote sensing data available for use with other sensor systems being used to monitor and study glaciers. They also provide strong, visual context information on glacier environments and processes using a familiar medium, the camera.
Even with the reversal of season and different lighting conditions of these two acquisitions, a loss of mass and change of structure, particularly in the lobe, are strikingly evident in these comparative photos. Glaciers are one of the special topics identified as scientific objectives for monitoring with photography from the International Space Station. Astronaut photography is a complimentary source of remote sensing data available for use with other sensor systems being used to monitor and study glaciers. They also provide strong, visual context information on glacier environments and processes using a familiar medium, the camera.
