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The Multi-Telescope Telescope Project: An Inexpensive Spectroscopic Facility

Published online by Cambridge University Press:  12 April 2016

W.G. Bagnuolo ,
I.K. Furenlid ,
D.R. Gies ,
D.J. Barry ,
C.H. Hopper ,
H.A. McAlister  and
W.I. Hartkopf
W.G. Bagnuolo
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
I.K. Furenlid
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
D.R. Gies
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
D.J. Barry
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
C.H. Hopper
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
H.A. McAlister
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA
W.I. Hartkopf
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303, USA

Abstract

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We have constructed a new facility at the Georgia State University Hard Labor Creek Observatory, consisting of a telescope and a fiber-fed spectrograph and detector. The Multi-Telescope Telescope (MTT) is an inexpensive one-meter light-collecting telescope whose ‘primary’ mirror consists of nine 33.3 cm mirrors. Each mirror of the MTT focuses light into a separate optical fiber, thus avoiding light losses of conventional fiber bundles. The optical fibers feed a modified ‘slightly’ off-plane Ebert-Fastie spectrograph. The detector is a CCD with low thermal noise characteristics, cooled to 200 K. The CHARA spectroscopic facility will be used for high precision radial velocity observations of binary orbits, tomographic separation of binary spectra, and observations of nonradial pulsations of Be stars.

Type
Spectroscopic Studies
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 137 - 139
Copyright
Copyright © Astronomical Society of the Pacific 1992