Abstract
WE have recently obtained infra-red, spectra of the night sky using the newly improved Kodak IZ(2) plates. An exposure of 48 hr. was sufficient to bring up a considerable number of lines on a hypersensitized plate. An f/0.8 auroral spectrograph described elsewhere1 was employed. A microphotometer tracing of a typical plate is shown in Fig. 1. The spectral slit width was 4.5 A.
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JONES, A. Infra-red Spectrum of the Night Sky near 10000 A.. Nature 175, 950–951 (1955). https://doi.org/10.1038/175950a0
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DOI: https://doi.org/10.1038/175950a0
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