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A program of high resolution spectroscopy of comets is being conducted at TNG (Canary Islands) using the echelle spectrograph SARG. The aim of the program is to catalogue emission lines in the visible range of various comets, compare them and possibly identify the many existing unknown lines. As a first step, we catalogued the lines in the spectrum of the comet 153P/Ikeya-Zhang and compared them with the lines already listed in existing catalogues. The comet was observed with SARG on the night 19–20 of April, 2002, with a short slit covering the spectral range of 4620–7920 Å and with a resolving power , finding 8468 emission lines.
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Cremonese et al. (2006) studied this question.
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