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Collection:
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NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
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Title:
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Venus Hemispherical Globes (with place names)
Title
Venus Hemispherical Globes (with place names)
Title
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Original Caption Released with Image:
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The images used for the base of this globe show the northern and southern hemispheres of Venus as revealed by more than a decade of radar investigations culminating in the 1990-1994 Magellan mission. The Magellan spacecraft imaged more than 98% of Venus at a resolution of about 100 meters; the effective resolution of these images is about 3 kilometers. A mosaic of the Magellan images (most with illumination from the west) forms the image base. Gaps in the Magellan coverage were filled with images from Soviet Venera 15 and 16 spacecraft in the northern quarter of the planet, with images from the Earth-based Arecibo radar in a region centered roughly on 0 degrees latitude and 0 degrees longitude, and with a neutral tone elsewhere (primarily near the south pole). The composite image was processed to improve contrast and to emphasize small features and was color-coded to represent elevation. Gaps in the elevation data from the Magellan radar altimeter were filled with altimetry from the Venera spacecraft and the U.S. Pioneer Venus missions. The images are presented in a projection that portrays the entire surface of Venus in a manner suitable for the production of a globe. A specialized program was used to create the "flower petal" appearance of the images; the area of each petal from 0 to 75 degrees latitude is in the Transverse Mercator projection, and the area from 75 to 90 degrees latitude is in the Lambert Azimuthal Equal-Area projection. The projections for adjacent petals overlap by 2 degrees of longitude, so that some features are shown twice. Names are approved by the International Astronomical Union. (See PIA03151 for the image without place names.)
Original_Caption_Rel eased_with_Image
The images used for the base of this globe show the northern and southern hemispheres of Venus as revealed by more than a decade of radar investigations culminating in the 1990-1994 Magellan mission. The Magellan spacecraft imaged more than 98% of Venus at a resolution of about 100 meters; the effective resolution of these images is about 3 kilometers. A mosaic of the Magellan images (most with illumination from the west) forms the image base. Gaps in the Magellan coverage were filled with images from Soviet Venera 15 and 16 spacecraft in the northern quarter of the planet, with images from the Earth-based Arecibo radar in a region centered roughly on 0 degrees latitude and 0 degrees longitude, and with a neutral tone elsewhere (primarily near the south pole). The composite image was processed to improve contrast and to emphasize small features and was color-coded to represent elevation. Gaps in the elevation data from the Magellan radar altimeter were filled with altimetry from the Venera spacecraft and the U.S. Pioneer Venus missions. The images are presented in a projection that portrays the entire surface of Venus in a manner suitable for the production of a globe. A specialized program was used to create the "flower petal" appearance of the images; the area of each petal from 0 to 75 degrees latitude is in the Transverse Mercator projection, and the area from 75 to 90 degrees latitude is in the Lambert Azimuthal Equal-Area projection. The projections for adjacent petals overlap by 2 degrees of longitude, so that some features are shown twice. Names are approved by the International Astronomical Union. (See PIA03151 for the image without place names.) Original Caption Released with Image
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Addition Date:
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2001-08-27
Addition_Date
2001-08-27
Addition Date
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Produced By:
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U.S. Geological Survey
Produced_By
U.S. Geological Survey
Produced By
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Mission:
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Magellan
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Spacecraft:
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Pioneer Venus Orbiter
Spacecraft
Pioneer Venus Orbiter
Spacecraft
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Spacecraft:
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Arecibo Observatory
Spacecraft
Arecibo Observatory
Spacecraft
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Spacecraft:
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Magellan
Spacecraft
Magellan
Spacecraft
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Target Name:
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Venus
Target_Name
Venus
Target Name
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Is a satellite of:
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Sol (our sun)
Is_a_satellite_of
Sol (our sun)
Is a satellite of
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Instrument:
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Arecibo Radar Data
Instrument
Arecibo Radar Data
Instrument
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Instrument:
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Imaging Radar
Instrument
Imaging Radar
Instrument
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Product Size:
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15464 samples x 9249 lines
Product_Size
15464 samples x 9249 lines
Product Size
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Primary Data Set:
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Magellan MIDRs
Primary_Data_Set
Magellan MIDRs
Primary Data Set
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facet_what:
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Sun
facet_what
Sun
facet_what
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facet_what:
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Venus
facet_what
Venus
facet_what
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Magellan
facet_what
Magellan
facet_what
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facet_what:
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Pioneer Venus
facet_what
Pioneer Venus
facet_what
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facet_what:
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Pioneer Venus Orbiter
facet_what
Pioneer Venus Orbiter
facet_what
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facet_what:
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Altimeter
facet_what
Altimeter
facet_what
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facet_what:
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Venera 15
facet_what
Venera 15
facet_what
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facet_where:
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Venus
facet_where
Venus
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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Image #:
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PIA03167
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UID:
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SPD-PHOTJ-PIA03167
UID
SPD-PHOTJ-PIA03167
UID
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orignial url:
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orignial_url
orignial url
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