In-orbit performance of Herschel-HIFI

Details In-orbit performance of Herschel-HIFI In-orbit performance of Herschel-HIFI

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012a%26a...537a..17r&link_type=abstract

Astronomy & Astrophysics, Volume 537, id.A17

Astronomy and Astrophysics

Astrophysics

14

Methods: Observational, Space Vehicles: Instruments, Instrumentation: Spectrographs

Scientific paper

Aims: In this paper the calibration and in-orbit performance of the Heterodyne Instrument for the Far-Infrared (HIFI) is described. Methods: The calibration of HIFI is based on a combination of ground and in-flight tests. Dedicated ground tests to determine those instrument parameters that can only be measured accurately using controlled laboratory stimuli were carried out in the instrument level test (ILT) campaign. Special in-flight tests during the commissioning phase (CoP) and performance verification (PV) allowed the determination of the remaining instrument parameters. The various instrument observing modes, as specified in astronomical observation templates (AOTs), were validated in parallel during PV by observing selected celestial sources. Results: The initial calibration and in-orbit performance of HIFI has been established. A first estimate of the calibration budget is given. The overall in-flight instrument performance agrees with the original specification. Issues remain at only a few frequencies.
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

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