A Heliospheric Imager for Deep Space: Lessons Learned from Helios, SMEI, and STEREO

Details A Heliospheric Imager for Deep Space: Lessons Learned from Helios, SMEI, and STEREO A Heliospheric Imager for Deep Space: Lessons Learned from Helios, SMEI, and STEREO

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh41a1780b&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH41A-1780

Physics

[2101] Interplanetary Physics / Coronal Mass Ejections, [2102] Interplanetary Physics / Corotating Streams, [2194] Interplanetary Physics / Instruments And Techniques, [7924] Space Weather / Forecasting

Scientific paper

The zodiacal-light photometers on the twin Helios spacecraft, the Solar Mass Ejection Imager (SMEI) aboard the Coriolis spacecraft, and the Heliospheric Imagers (HIs) on the twin Solar-TErrestrial RElations Observatory (STEREO) spacecraft all point the way to optimizing future remote-sensing Thomson-scattering observations from deep space. In the future, such data could be provided by wide-angle viewing instruments deployed on Solar Orbiter, Solar Probe Plus, and other deep-space missions. Here, we present instrument specifications required for a successful heliospheric imager, and the calibration measurements and data-processing steps that enable the best use of these remote-sensing systems. When properly designed and calibrated, data from these types of instruments measure zodiacal-dust properties, and are used to provide three-dimensional reconstructions of heliospheric electron density over large volumes of the inner heliosphere. Such systems measure fundamental properties of the inner heliospheric plasma, provide context for the in-situ monitors on board spacecraft, and perhaps most significantly, enable physics-based analyses of this important segment of the Sun-Spacecraft connection.

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