A subtractive double pass spectrograph f
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P. Mein; M. Blondel
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Article
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1972
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Springer
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English
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Two-dimensional images in locally monochromatic light are obtained, using a subtractive double pass spectrograph. The spatial resolution is high and independent of the spectral bandwidth. The system is very suitable for fine structure observations in strong lines. A new device was carried out at th