The practical application of optical fibres and microlenses to multi-object spectroscopy

Details The practical application of optical fibres and microlenses to multi-object spectroscopy The practical application of optical fibres and microlenses to multi-object spectroscopy

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..627..125p&link_type=abstract

IN: Instrumentation in astronomy VI; Proceedings of the Meeting, Tucson, AZ, Mar. 4-8, 1986. Part 1 (A87-36376 15-35). Bellingha

Physics

Optics

5

Astronomical Spectroscopy, Cassegrain Optics, Fiber Optics, Lenses, Telescopes, Transmission Efficiency, Apertures, Image Processing, Polishing

Scientific paper

Multi-object fibre optic feeds are being prepared for use with the Cassegrain spectrographs of the La Palma Observatory 2.5 m Isaac Newton Telescope and 4.2 m William Herschel Telescope. The techniques used for terminating and preparing the fibres are described. In order to maintain high efficiency when feeding f/15 and f/11 spectrographs with fibres, microlenses have been used. The preparation and setting up of a microlensed fibre system to feed the f/15 spectrograph of the INT from the f/3.3 prime focus is described. The performance of this system is demonstrated in the laboratory and details are given of the system under construction for the WHT.

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