de Graauw, Th. and Whyborn, N. and Caux, E. and Phillips, T. and Stutzki, J. and Tielens, A. and Güsten, R. and Helmich, F. and Luinge, W. and Martín-Pintado, J. and Pearson, J. and Planesas, P. and Roelfsema, P. and Saraceno, P. and Schieder, R. and Wildeman, K. and Wafelbakker, K. (2008) Herschel-Heterodyne Instrument for the Far-Infrared (HIFI). In: Astronomy in the Submillimeter and Far Infrared Domains with the Herschel Space Observatory. EAS Publications Series. No.34. EDP Sciences , Les Ulis, pp. 3-20. ISBN 9782759803903. https://resolver.caltech.edu/CaltechAUTHORS:20181115-082924300
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Abstract
This paper describes the Heterodyne Instrument for the Far-Infrared (HIFI) to be launched onboard of ESA's Herschel Space Observatory, by 2008. The instrument is designed to be electronically tunable over a wide and continuous frequency range in the Far Infrared, with velocity resolutions better than 0.1 km s^(-1) and a high sensitivity. This will allow detailed investigations of a wide variety of astronomical sources, ranging from solar system objects, star formation regions to nuclei of galaxies. The instrument comprises 5 frequency bands covering 480–1150 GHz with SIS mixers and a sixth dual frequency band, for the 1410–1910 GHz range, with Hot Electron Bolometer Mixers (HEB). The Local Oscillator (LO) subsystem consists of a Ka-band synthesizer followed by 14 chains of frequency multipliers, 2 chains for each frequency band. A pair of Auto-Correlators and a pair of Acousto-Optic spectrometers process the two IF signals from the dual-polarization front-ends to provide instantaneous frequency coverage of 4 GHz, with a set of resolutions (140 kHz to 1 MHz), better than <0.1 km s^(-1). After a successful qualification program, the flight instrument entered the testing phase. We will also report on the first pre-flight test and calibration results together with the expected in-flight performance.
Item Type: | Book Section | ||||||
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Related URLs: |
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Additional Information: | © 2009 EAS, EDP Sciences. Published online 20 December 2008. | ||||||
Series Name: | EAS Publications Series | ||||||
Issue or Number: | 34 | ||||||
DOI: | 10.1051/eas:0934001 | ||||||
Record Number: | CaltechAUTHORS:20181115-082924300 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20181115-082924300 | ||||||
Official Citation: | The Herschel-Heterodyne Instrument for the Far-Infrared (HIFI). Th. de Graauw, N. Whyborn, E. Caux, T. Phillips, J. Stutzki, A. Tielens, R. Güsten, F. Helmich, W. Luinge, J. Martin-Pintado, J. Pearson, P. Planesas, P. Roelfsema, P. Saraceno, R. Schieder, K. Wildeman, K. Wafelbakker. EAS Publications Series 34 3-20 (2009). DOI: 10.1051/eas:0934001 | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 90909 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | Tony Diaz | ||||||
Deposited On: | 15 Nov 2018 17:13 | ||||||
Last Modified: | 16 Nov 2021 03:36 |
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