Neptune - Voyager 2

Clear-filter image of the Great Dark Spot on Neptune from 4 million km

Voyager 2 image of the Great Dark spot on Neptune from 4 million km. The Great Dark Spot (GDS), at upper center, is a weather system about the size of Earth. The GDS rotates counterclockwise with a period of about 16 days. Bright clouds are visible south of the GDS. These clouds appear to be 50 to 100 km higher in altitude than the spot. The image was taken through the clear filter of the narrow angle camera. The frame is about 29,000 km on a side and north is at 1:00. (Voyager 2, 11314.46)
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High resolution tiff file (1.0 Mb)

Location & Time Information
Date/Time (UT): 1989-08-22 T 15:31:09
Distance/Range (km): 3,900,000.
Central Latitude/Longitude (deg): N/A
Orbit(s): flyby

Imaging Information
Area or Feature Type: clouds, Great Dark Spot
Instrument: Narrow-angle Vidicon Camera
Instrument Resolution (pixels): 800 x 800, 8 bit
Instrument Field of View (deg): 0.424 x 0.424
Filter: clear
Illumination Incidence Angle (deg): N/A
Phase Angle (deg): N/A
Instrument Look Direction: N/A
Surface Emission Angle (deg): N/A

Ordering Information
CD-ROM Volume: VG_0010
NASA Image ID number: FDS 11314.46
Other Image ID number: 0862N2-003
NSSDC Data Set ID (Photo): 77-076A-01T
NSSDC Data Set ID (CD): 77-076A-01f
Other ID: N/A
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Updated 11 March 2003, DRW.