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Initial CHIP He I Observations of Solar Limb Activity

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Abstract

A new instrument capable of 3-min time resolution full-disk and limb observations in the Hei 1083 nm spectral line has been in operation at the High Altitude Observatory's Mauna Loa Solar Observatory (MLSO) since April 1996. We discuss instrument capabilities and performance and present some initial observations of limb activity from the first year of instrument operation. We compare limb Hei and Hα observations of quiescent and active prominences, comment on the role of Doppler shifts in interpreting the Hei observations, and illustrate the use of disk/limb Hei observations of a CME-associated eruptive filament in mass-ejection studies.

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Authors and Affiliations

  1. Department of Physics, Rhodes College, Memphis, TN, 38112, U.S.A.

    R. M. MacQueen & J. G. Blankner

  2. High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO, 80302, U.S.A.

    D. F. Elmore, A. R. Lecinski & O. R. White

Authors
  1. R. M. MacQueen
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  2. J. G. Blankner
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  3. D. F. Elmore
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  4. A. R. Lecinski
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  5. O. R. White
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MacQueen, R.M., Blankner, J.G., Elmore, D.F. et al. Initial CHIP He I Observations of Solar Limb Activity. Sol Phys 182, 97–105 (1998). https://doi.org/10.1023/A:1005010304281

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  • DOI: https://doi.org/10.1023/A:1005010304281

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