Consequently the Balmer pseudo-continuum emission, due to the merging of highest Balmer lines, is strengthened. ... The Na-D2 line is affected by the F20 increase only in the line center and not in the wings, while it is not sensitive to the Po value. ... by a narrow band tunable filter (e.g. an UBF with a FP in series, 25 mA FWHM passband) feeded by an ad-hoc optical path at Vacuum Tower Telescopeanbsp;...
Title | : | Opening Frontiers in Solar Research |
Author | : | Roberto Falciani |
Publisher | : | Pergamon - 1991 |
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