Gustav Kirchhoff & Robert Bunsen used this prismed "scope" to see the bands of colored light each element produced
They observed dark Fraunhofer absorption lines of light from the fire as its light .... 
You'll see no prominences or fine surface detail, but Baader filters are... [DOC] [TLE] solar spectroscopy | CNY Observers & Observing [PAR] Remembering The Godfather Of Solar Astronomy, Robert Barlow Bob Godfrey 
.... That hang and the view through his Bob-o-Scope are two of my favorite .... 
Kirchoff realized that each element produces a distinct spectrum of colored 
emission ...