Nadine Wehres, Bettina Heyne, Frank Lewen, Marius Hermanns, Bernhard Schmidt, Christian Endres, Urs U. Graf, Daniel R. Higgins, Stephan Schlemmer
We present first results of a new heterodyne spectrometer dedicated to high-resolution spectroscopy of molecules of astrophysical importance. The spectrometer, based on a roomtemperature heterodyne receiver, is sensitive to frequencies between 75 and 110 GHz with an instantaneous bandwidth of currently 2.5 GHz in a single sideband. The system performance, in particular the sensitivity and stability, is evaluated. Proof of concept of this spectrometer is demonstrated by recording the emission spectrum of methy…
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