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Proceedings Paper

Toward total transmission: the Confocal Image Slicer
Author(s): Francisco Diego
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Paper Abstract

This paper describes an image slicer based on a modified version of the Bowen-Walraven slicer. The new design is called Confocal Image Slicer, and delivers a large number of slices, all in focus. This allows the slicing of a wider area of the seeing disk, to the benefit of very high resolution spectrographs like the Ultra-High-Resolution Facility, where the slicer gives access to stars up to 3 magnitudes fainter than the limit imposed by a narrow slit for the same resolution and signal to noise ratio. The basic principle and design philosophy of the confocal image slicer are presented, together with a description of the development of a prototype and a final version now fully commissioned at the Anglo-Australian telescope. Some astrophysical results are also included.

Paper Details

Date Published: 1 June 1994
PDF: 8 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176683
Show Author Affiliations
Francisco Diego, Univ. College London (United Kingdom)


Published in SPIE Proceedings Vol. 2198:
Instrumentation in Astronomy VIII
David L. Crawford; Eric R. Craine, Editor(s)

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