NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The Beauty and Limitations of 10 Micron Heterodyne Interferometry (ISI)Until recently, heterodyne interferometry at 10 microns has been the only successful technique for stellar interferometry in the very difficult atmospheric window from 9-12 microns. For most of its operational lifetime the U.C. Berkeley Infrared Spatial Interferometer was a single-baseline two telescope (1.65 m aperture) system using CO2 lasers as local oscillators. This instrument was designed and constructed from 1983-1988, and first fringes were obtained at Mt. Wilson in June 1988. During the past few years, a third telescope was constructed and just recently the first closure phases were obtained at 11.15 microns. We discuss the history, physics and technology of heterodyne interferometry in the mid-infrared, and some key astronomical results that have come from this unique instrument.
Document ID
20040027560
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Danchi, William C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Astronomy
Meeting Information
Meeting: Ringberg Workshop
Location: Munich
Country: Germany
Start Date: September 1, 2003
End Date: September 5, 2003
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available