Mid-infrared interferometry on spectral lines: I. Instrumentation
Astrophysics
2009-10-31 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/0007381,
title = {Mid-infrared interferometry on spectral lines: I. Instrumentation},
author = {J. D. Monnier and W. Fitelson and W. C. Danchi and C. H. Townes},
journal= {arXiv preprint arXiv:astro-ph/0007381},
year = {2009}
}
Comments
20 Pages, 7 Figures, Accepted in Astrophysical Journal Supplement Series