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.
Published Version
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