< STS061-75-23 >
| NASA Photo ID | STS061-75-23 |
| Focal Length | 40mm |
| Date taken | 1993.12.03 |
| Time taken | 08:00:52 GMT |
Resolutions offered for this image:
5266 x 5266 pixels 639 x 639 pixels 5700 x 6000 pixels 500 x 526 pixels 640 x 480 pixels
5266 x 5266 pixels 639 x 639 pixels 5700 x 6000 pixels 500 x 526 pixels 640 x 480 pixels
Cloud masks available for this image:
Spacecraft nadir point: 13.6° N, 15.4° E
Photo center point: 14.0° N, 13.5° E
Photo center point by machine learning:
Photo center point: 14.0° N, 13.5° E
Photo center point by machine learning:
Nadir to Photo Center: West
Spacecraft Altitude: 290 nautical miles (537km)
Camera: | Hasselblad |
Focal Length: | 40mm |
Camera Tilt: | 22 degrees |
Format: | 5017: Kodak, natural color positive, Ektachrome, X Professional, ASA 64, standard base |
Film Exposure: | Normal |
| Additional Information | |
| Width | Height | Annotated | Cropped | Purpose | Links |
|---|---|---|---|---|---|
| 5266 pixels | 5266 pixels | No | No | Earth From Space collection | Download Image |
| 639 pixels | 639 pixels | No | No | Earth From Space collection | Download Image |
| 5700 pixels | 6000 pixels | No | No | Download Image Download Color Calibration Image for this Image |
|
| 500 pixels | 526 pixels | No | No | Download Image Download Color Calibration Image for this Image |
|
| 640 pixels | 480 pixels | No | No | Download Image |
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No GeoTIFF is available for this photo.Image Caption: STS061-075-023 Lake Chad (North Basin), Chad December 1993
The north basin of Lake Chad shows little evidence of vegetation. Agriculture occurs in a few fragmented areas, primarily in the lowland dunes. This photograph shows water conditions that have prevailed in the north basin during the decades of 1980s and 1990s. The last major documentation of substantial water in the north basin was obtained when Apollo astronauts collected photographs of this lake in the late 1960s. The light tan areas northwest of the basin are classified as salty, dry lakebeds. Most of the moisture that reaches the north basin is provided by intermittently flowing rivers that enter the lake from the west-southwest. (Refer to photograph STS-061-075-022 to see extensive vegetation and standing water in the south basin.)
The north basin of Lake Chad shows little evidence of vegetation. Agriculture occurs in a few fragmented areas, primarily in the lowland dunes. This photograph shows water conditions that have prevailed in the north basin during the decades of 1980s and 1990s. The last major documentation of substantial water in the north basin was obtained when Apollo astronauts collected photographs of this lake in the late 1960s. The light tan areas northwest of the basin are classified as salty, dry lakebeds. Most of the moisture that reaches the north basin is provided by intermittently flowing rivers that enter the lake from the west-southwest. (Refer to photograph STS-061-075-022 to see extensive vegetation and standing water in the south basin.)
