Toward total transmission: the Confocal Image Slicer

Details Toward total transmission: the Confocal Image Slicer Toward total transmission: the Confocal Image Slicer

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2198..525d&link_type=abstract

Proc. SPIE Vol. 2198, p. 525-532, Instrumentation in Astronomy VIII, David L. Crawford; Eric R. Craine; Eds.

Astronomy and Astrophysics

Astronomy

2

Scientific paper

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.

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