Fig. 2
The 2A detector segment of Tol 1247-232. The upper spectrum is the LiF channel, and the lower spectrum is the SiC channel. The Lyman limit in the SiC channel is marked with a white vertical line. Airglow lines are visible as bright point-like structures. The wavelengths are given in Å. The image is shown in original size with 16 384 × 1024 pixels and on logarithmic scale.
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