Abstract
The High Resolution Airglow and Aurora Spectroscopy (HIRAAS) experiment was launched from Vandenberg AFB, CA aboard the Advanced Research and Global Observation Satellite (ARGOS). The ARGOS launch occurred on 23 February 1999 at 2:29:55 AM Pacific Standard Time. The ARGOS is in a sun synchronous, circular orbit at 845 Km altitude. The experiment has been operating well since experiment initialization in mid-May 1999. The experiment consists of three ultraviolet spectrographs. The High-resolution Ionospheric and Thermospheric Spectrograph (HITS) is a very high resolution (>0.06 nm) spectrograph covering the 50-150 nm passband. The Low Resolution Airglow and Aurora Spectrograph (LORAAS) is a moderate resolution (1.7 nm) spectrograph covering the 80-170 nm passband. The Ionospheric Chemistry and Atmospheric Chemistry (ISAAC) experiment is a high resolution (0.38 nm) spectrograph covering the 180-320 nm passband. All three instruments are primarily operated as limb scanners, although they can also be positioned to stare at a fixed zenith angle. We will present an overview of the experiment, discuss its science goals, and present an overview of results from the experiment.
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