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Proceedings Paper

Diverse field spectroscopy: instrument concepts
Author(s): G. J. Murray; J. R. Allington-Smith; S. Blake; R. Content; U. Lemke; C. Poppett
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Paper Abstract

We are currently developing a range of instrument concepts which combine the advantages of integral field and multiobject systems. They are modular, arbitrarily scalable, and will be capable of addressing large fields with extremely high efficiency. We have coined the phrase 'Diverse Field Spectroscopy' to describe this paradigm shift in instrument versatility. For such instruments, downselection to extract sub-sets of data from the focal plane is key. Whereas other existing and proposed instruments (multiplex, multiple-field) use individual deployable fibres, IFUs or field pickoff mechanisms to select regions from the field, the focus in Durham has been on implementing the downselection by means of optical switches. We believe that optical switching will be a foundation-technology for future ELTs. Several of our most promising concepts will be presented in this paper.

Paper Details

Date Published: 20 July 2010
PDF: 13 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77357J (20 July 2010); doi: 10.1117/12.857327
Show Author Affiliations
G. J. Murray, Durham Univ. (United Kingdom)
J. R. Allington-Smith, Durham Univ. (United Kingdom)
S. Blake, Durham Univ. (United Kingdom)
R. Content, Durham Univ. (United Kingdom)
U. Lemke, Durham Univ. (United Kingdom)
C. Poppett, Durham Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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