We demonstrate a conceptual design for a high-resolution infrared spectrograph, the Dark Matter Quest Spectrograph: DMQS, dedicated to detecting dark matter. A crucial standout of the DMQS is it is not optimized for typical astronomical observations but for searching for dark matter. Although it is a relatively simple setup compared to some other competitive instruments and facilities, some of which have billion-dollar budgets, only a few nights’ observation with the DMQS and a small telescope with F/10 will enable to detect the faintest signal from dark matter to date for its observable mass range of dark matter. The DMQS’s compatibility with small telescopes also increases the chance of long-term observations, further improving its sensitivity to search for dark matter.
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