Engineering and testing of prime focus fiber feeds on the William Herschel Telescope

Susan P. Worswick; David W. Gellatly; Nicholas K. Ferneyhough; Percy Terry; Andrew J. Weise; Richard G. Bingham; Charles R. Jenkins; Frederick G. Watson

doi:10.1117/12.176766

1 June 1994 Engineering and testing of prime focus fiber feeds on the William Herschel Telescope

Susan P. Worswick, David W. Gellatly, Nicholas K. Ferneyhough, Percy Terry, Andrew J. Weise, Richard G. Bingham, Charles R. Jenkins, Frederick G. Watson

Author Affiliations +

Proceedings Volume 2198, Instrumentation in Astronomy VIII; (1994) https://doi.org/10.1117/12.176766
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

The prime focus of the William Herschel telescope provides a wide field (one degree) for fiber spectroscopy. The production of the fiber feeds, which run from the prime focus to one of the Nasymyth platforms, has required the development of a multiple fiber to fiber connector together with techniques for mounting micro-lenses at the input to the spectrography. The protection of the fibers on the telescope, coupled with careful routing, has led to good focal ratio degradation (FRD) performance. A system for measuring the variation in transmission of the fibers on the telescope has been produced; the technique allows these measurements to be made under normal daytime lighting conditions.

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Susan P. Worswick, David W. Gellatly, Nicholas K. Ferneyhough, Percy Terry, Andrew J. Weise, Richard G. Bingham, Charles R. Jenkins, and Frederick G. Watson "Engineering and testing of prime focus fiber feeds on the William Herschel Telescope", Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); https://doi.org/10.1117/12.176766

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