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HIFI 'first light' spectrum of DR21


Date: 09 July 2009
Satellite: Herschel
Depicts: HIFI first light spectrum
Copyright: ESA and the HIFI Consortium

HIFI obtained its first spectra on 22 June during the in-orbit commissioning phase of the Herschel mission. These observations, made before fine-tuning or in-orbit final calibration was performed, demonstrate that the instrument was performing better than expected. The first target for HIFI was DR21, a giant molecular cloud.
Last Update: 1 September 2019
21-Apr-2026 10:36 UT

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