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Астронет: Астрономическая картинка дня Спутник Landsat 7 обозревает Землю http://www.variable-stars.ru/db/msg/1163096/eng |
Credit & Copyright: Landsat 7 Project,
NASA
Explanation:
Launched last month, NASA's
Landsat 7 spacecraft
now orbits planet Earth.
Looking down from an altitude of 700 km,
Landsat 7 can map
the planet's surface in visible and infrared
bands and
resolve features 30 meters across or smaller.
For example,
this striking engineering test image is
a natural-looking color composite of 3 different
visible wavelength bands.
It nicely shows details of urban areas around San Francisco,
California, USA,
nestled in the surrounding terrain (north is up).
Flowing blue-green
colors track the spring runoff from
the Sierras to the west and neighboring mountains into
the bay and out into the Pacific ocean.
Landsat 7 is
currently performing well in its check out phase
and controllers are preparing the satellite for
regular operations.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.