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. 2020 Dec 21;217(1):4. doi: 10.1007/s11214-020-00777-5

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© The Author(s) 2020

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Fig. 15 — Subsections of the transmission spectrometer. The spectrometer section (a) is shown with the fiber connector facing to the rear. The dichroic beam splitter is in focus. The grating assembly (b) is shown with the input side visible, and relay lens is seen in its housing (c), looking from the CCD side. Other components on the table are visible through the relay lens