![[HENA image]](hena.jpg)
Energetic Neutral Atom image of a storm cloud of energetic particles from
the High Energy Neutral Atom Imager instrument. Red colors indicate the
highest intensity of incoming particles, blue represents the lowest. We
are looking from the sun towards the Earth, viewing the cloud beyond the
Earth on the night side.
This is a selected frame from a sequence which is available as a
quicktime movie.
0.9 Mb TIFF Version of the Image
![[Empire State Building image]](image_empire.jpg)
The Radio Plasma Imager (RPI) on IMAGE is the first-of-its-kind instrument
designed to study the dynamics of the magnetosphere by using radar techniques.
In order to generate very low frequency radio waves and to receive the
resulting echoes, RPI uses very long dipole antennas. IMAGE has 2 spin-plane
dipole antennas (along the spacecraft X and Y axis) and one spin-axis dipole
antenna (along the spacecraft Z axis). The X and Y axis antennas are 1647 ft
or 500 meters tip-to-tip each. These antennas are 182 ft longer than the
height of the Empire State Building, making the IMAGE spacecraft the largest
dipole antenna system currently in space. The IMAGE spin-axis dipole antenna is
about 66 feet long or 20 meters tip-to-tip in length (not shown). The
octagon shaped IMAGE spacecraft measures 7.4 ft in diameter by 4.9 ft in
height with the antennas retracted, and weighs 1,089 lbs.
This is a selected frame from a sequence which is available as a
quicktime movie.
2.7 Mb TIFF Version of the Image
![[Plasmasphere echoes image]](rpi_plasmagram.jpg)
Depth sounding of the tenuous extension of the Earth's upper ionosphere about
20,000 kilometers into space around the Earth, called the plamasphere, using
the Radio Plasma Imager instrument. The green traces correspond to echoes
from the plasmasphere at varying depths.
0.5 Mb TIFF Version of the Image
![[Plasmasphere image]](plasma0155.jpg)
Ultraviolet image of sunlight scattered from the Earth's extended atmosphere
of helium using the Extreme Ultraviolet Imager instrument. This image shows
that the ionized helium atmosphere extends to about 2 - 3 times the size of the Earth.
Irregularities at the fringe of the image, such as the upper left, indicate
magnetic storm activity. This is the first time such features have been imaged.
This is a selected frame from a sequence which is available as a
quicktime movie.
3.6 Mb TIFF Version of the Image
![[EUV aurora image]](aurora_0095.jpg)
Ultraviolet image of the aurora at the peak of a small space storm using the
Extreme Ultraviolet (EUV) Imager instrument on IMAGE. Brighter green corresponds to
brighter auroral light. The view is towards the earth's night side, and the
detailed, highly turbulent region near midnight reveals storm activity in the
magnetic field surrounding Earth.
This is a selected frame from a sequence which is available as a
quicktime movie.
3.6 Mb TIFF Version of the Image
![[Aurora substorm image]](fuv.jpg)
Aurora are caused by the interaction of precipitating charged particles
(electrons and ions) with the neutral gases of our atmosphere. Light
from the Earth's aurora occur principally in two oval-shaped bands lying
between ~65 and 75 degrees magnetic latitude and centered on the northern
(aurora borealis) and southern (aurora australis) magnetic poles. IMAGE
observes the aurora in several important wavelengths and has captured its
first geomagnetic substorm. These observations are caused by precipitating
electrons.
This is a selected frame from a sequence which is available as a
quicktime movie.
240 kb TIFF Version of the Image
![[Proton aurora image]](si12_enh.jpg)
Auroral emissions are excited principally by electron precipitation. We know
that some of the auroral emissions are produced by precipitating protons but
up until now have never observed a "proton aurora" from space. IMAGE is the
first spacecraft to measure the proton aurora.
2.8 Mb TIFF Version of the Image
![[Proton/electron aurora comparison image]](si_compare.jpg)
With IMAGE we can now simultaneously observe the proton and electron induced
aurora. The image of the aurora on the left is from precipitating protons,
in the center from precipitating electrons, and on the right from combined
protons and electrons. The overlay to the right shows green where the electron
aurora dominates, red where the proton aurora dominates, and yellow where both
are comparable.
921 kb TIFF Version of the Image