Heterodyne instrument for FIRST (HIFI): preliminary design

Mattheus WM de Graauw; Nick D. Whyborn; Herman van de Stadt; Gerard Beaudin; Douwe A. Beintema; Victor Belitsky; Philippe Cais; Emmanuel Caux; M. Gheudin; Alain Cros; P. de Groene; A. Emrich; Neal R. Erickson; Todd C. Gaier; Juan Daniel Gallego-Puyol; Jianrong Gao; Paul Hartogh; N. Honingh; J. Horn; K. Jacobs; R. Kruisinga; F. Lura; Alain Lecacheux; Vincenzo Natale; R. Orfei; John C. Pearson; Thomas G. Phillips; Peter R. Roelfsema; Carlo Rosolen; Morvan Salez; Rudolf T. Schieder; Karl-Friedrich Schuster; Gerhard W. Schwaab; J. P. Starsky; Juergen Stutzki; S. Torchinsky; Boris van Leeuwen; Huib Visser; Klaas J. Wildeman; Stafford Withington; Jonas Zmuidzinas

doi:10.1117/12.317368

31 July 1998 Heterodyne instrument for FIRST (HIFI): preliminary design

Mattheus WM de Graauw, Nick D. Whyborn, Herman van de Stadt, Gerard Beaudin, Douwe A. Beintema, Victor Belitsky, Philippe Cais, Emmanuel Caux, M. Gheudin, Alain Cros, P. de Groene, A. Emrich, Neal R. Erickson, Todd C. Gaier, Juan Daniel Gallego-Puyol, Jianrong Gao, Paul Hartogh, N. Honingh, J. Horn, K. Jacobs, R. Kruisinga, F. Lura, Alain Lecacheux, Vincenzo Natale, R. Orfei, John C. Pearson, Thomas G. Phillips, Peter R. Roelfsema, Carlo Rosolen, Morvan Salez, Rudolf T. Schieder, Karl-Friedrich Schuster, Gerhard W. Schwaab, J. P. Starsky, Juergen Stutzki, S. Torchinsky, Boris van Leeuwen, Huib Visser, Klaas J. Wildeman, Stafford Withington, Jonas Zmuidzinas

Author Affiliations +

Proceedings Volume 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes; (1998) https://doi.org/10.1117/12.317368
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

We describe the preliminary design of the proposed Heterodyne Instrument for FIRST (HIFI). The instrument will have a continuous frequency coverage over the range from 480 to 1250 GHz in five bands, while a sixth band will provide coverage for 1410 - 1910 GHz and 2400 - 2700 GHz. The first five bands will use SIS mixers and varactor frequency multipliers while in the sixth band a laser photomixer local oscillator will pump HEB mixers. HIFI will have an instantaneous bandwidth of 4 GHz, analyzed in parallel by two types of spectrometers: a pair of wide-band spectrometers (WBS), and a pair of high- resolution spectrometer (HRS). The wide-band spectrometer will use acousto-optic technology with a frequency resolution of 1 MHz and a bandwidth of 4 GHz for each of the two polarizations. The HRS will provide two combinations of bandwidth and resolution: 1 GHz bandwidth at 200 kHz resolution, and at least 500 MHz at 100 kHz resolution. The HRS will be divided into 4 or 5 sub-bands, each of which can be placed anywhere within the full 4 GHz IF band. The instrument will be able to perform rapid and complete spectral line surveys with resolving powers from 10³ up to 10⁷ (300 - 0.03 km/s) and deep line observations.

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Mattheus WM de Graauw, Nick D. Whyborn, Herman van de Stadt, Gerard Beaudin, Douwe A. Beintema, Victor Belitsky, Philippe Cais, Emmanuel Caux, M. Gheudin, Alain Cros, P. de Groene, A. Emrich, Neal R. Erickson, Todd C. Gaier, Juan Daniel Gallego-Puyol, Jianrong Gao, Paul Hartogh, N. Honingh, J. Horn, K. Jacobs, R. Kruisinga, F. Lura, Alain Lecacheux, Vincenzo Natale, R. Orfei, John C. Pearson, Thomas G. Phillips, Peter R. Roelfsema, Carlo Rosolen, Morvan Salez, Rudolf T. Schieder, Karl-Friedrich Schuster, Gerhard W. Schwaab, J. P. Starsky, Juergen Stutzki, S. Torchinsky, Boris van Leeuwen, Huib Visser, Klaas J. Wildeman, Stafford Withington, and Jonas Zmuidzinas "Heterodyne instrument for FIRST (HIFI): preliminary design", Proc. SPIE 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes, (31 July 1998); https://doi.org/10.1117/12.317368

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