The multi-telescope telescope - A cost-effective approach to fiber-fed spectroscopy

Details The multi-telescope telescope - A cost-effective approach to fiber-fed spectroscopy The multi-telescope telescope - A cost-effective approach to fiber-fed spectroscopy

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasp..102..604b&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, May 1990, p. 604-611.

Astronomy and Astrophysics

Astrophysics

10

Astronomical Spectroscopy, Optical Fibers, Paraboloid Mirrors, Reflecting Telescopes, Spectroscopic Telescopes, Ccd Star Tracker, Signal Detectors, Spectrographs

Scientific paper

A spectroscopic facility is being developed to extend the Center for High Angular Resolution Astronomy program in speckle interferometry to new areas of stellar astrophysics. The facility is based on a multitelescope telescope (MTT) and a fiber-optic-fed spectrograph. The MTT is a one-meter light-collecting telescope with a primary mirror made up of nine 33.3-cm telescope mirrors. The mirrors will focus light into separate optical fibers, avoiding the loss of light associated with the dead space in conventional fiber bundles. It is estimated that the system will have an overall optical efficiency of about 2.7 percent, corresponding to a limiting magnitude of 9.4 for 1000 sec exposure, S/N = 100, and a resolution of 0.2 A/pixel. The possible applications of the system are discussed, including spectroscopic observations of binaries and nonradial pulsation in Be stars.

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