Mid-infrared interferometry on spectral lines: I. Instrumentation

Details Mid-infrared interferometry on spectral lines: I. Instrumentation Mid-infrared interferometry on spectral lines: I. Instrumentation

2000-07-25

arxiv.org/abs/astro-ph/0007381v1

Astrophys.J.Suppl. 129 (2000) 421-430

Astronomy and Astrophysics

Astrophysics

20 Pages, 7 Figures, Accepted in Astrophysical Journal Supplement Series

Scientific paper

10.1086/313417

The U. C. Berkeley Infrared Spatial Interferometer has been outfitted with a filterbank system to allow interferometric observations of mid-infrared spectral lines with very high spectral resolution (R ~ 10^5). This paper describes the design, implementation, and performance of the matched 32-channel filterbank modules, and new spectral line observations of Mars and IRC+10216 are used to demonstrate their scientific capability. In addition, observing strategies are discussed for accurate calibration of fringe visibilities in spectral lines, despite strong atmospheric fluctuations encountered in the infrared.

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