STS61C-42-86

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NASA Photo ID

STS61C-42-86

Focal Length

250mm

Date taken

1986.01.16

Time taken

07:15:15 GMT

Resolutions offered for this image:
5700 x 5900 pixels 500 x 518 pixels 640 x 480 pixels

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Spacecraft nadir point: 16.0° N, 18.4° E

Photo center point: 19.5° N, 22.5° E

Photo center point by machine learning:

Nadir to Photo Center: Northeast

Spacecraft Altitude: 184 nautical miles (341km)

Country or Geographic Name:

CHAD

Features:

ERDI DJI, ERDI FOCHIMI

Features Found Using Machine Learning:

Cloud Cover Percentage:

0 (no clouds present)

Sun Elevation Angle:

24°

Sun Azimuth:

122°

Camera:

Hasselblad

Focal Length:

250mm

Camera Tilt:

Low Oblique

Format:

5017: Kodak, natural color positive, Ektachrome, X Professional, ASA 64, standard base

Film Exposure:

Normal

Additional Information

Width	Height	Annotated	Cropped	Links
5700 pixels	5900 pixels	No	No	Download Image
500 pixels	518 pixels	No	No	Download Image
640 pixels	480 pixels	No	No	Download Image

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Image Caption:
Detailed Views of Mourdi Depression (top left of general
view) T19

Bed of one of the proposed major rivers of the ancient Trans-
African Drainage System (TADS) is the wide, sand-filled depres-
sion (top left). The small, ragged scarps (200-400 feet high) are
formed in ancient eroded soils, probably also related previous
wetter climates. Wind streaks off these dark areas give a vivid
sense of wind direction (NE to SW). (61C-42-0086)