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High resolution spectroscopy of solar activity

I. Observing procedures

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Abstract

We describe an observing program designed to obtain high spatial resolution photographic spectra of solar active region phenomena, with time resolution as short as 6 s. The Vacuum Tower Telescope and Echelle Spectrograph at Sacramento Peak Observatory are used to make observations simultaneously in Hα, He D3, Ca ii K, Mg b1, the CN bandhead at λ3883, and the magnetically-sensitive line Fe i λ6302. Images reflected from the slit jaw are exposed simultaneously in white-light and Hα. Observations of chromospheric heating, following a high-velocity infall along an Hα superpenumbral filament, are presented to illustrate the capabilities of the program.

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Authors and Affiliations

  1. Sacramento Peak Observatory, 88349, Sunspot, NM, U.S.A.

    L. E. Cram, R. D. Robinson, H. A. Mauter, G. R. Mann & G. L. Phillis

Authors
  1. L. E. Cram
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  2. R. D. Robinson
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  3. H. A. Mauter
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  4. G. R. Mann
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  5. G. L. Phillis
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Additional information

Operated by the Association of Universities for Research in Astronomy, Inc., under contract AST 78-17292 with the National Science Foundation.

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Cram, L.E., Robinson, R.D., Mauter, H.A. et al. High resolution spectroscopy of solar activity. Sol Phys 71, 237–245 (1981). https://doi.org/10.1007/BF00167548

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  • DOI: https://doi.org/10.1007/BF00167548

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