Spectrum of the night airglow between 3 and 4 microns

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Abstract
The spectrum of the night airglow has been measured between 3 and 4 μ at a limit of resolution of 4 cm−1, the observations being made at an altitude of 95 000 feet. The most prominent feature of the spectrum is the Δν = 1 sequence of hydroxyl bands. An intensity analysis of the rotational structure yields a rotational temperature of 234 °K. In addition, the ν3 band of methane near 3000 cm−1 and the ν3 band of CO2 near 2350 cm−1 appear in emission.

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