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Strategies for spectroscopy on extremely large telescopes - III : remapping switched fibre systems.

Poppett, C.L. and Allington-Smith, J.R. and Murray, G.J. (2009) 'Strategies for spectroscopy on extremely large telescopes - III : remapping switched fibre systems.', Monthly notices of the Royal Astronomical Society., 399 (1). pp. 443-452.

Abstract

We explore the use of remapping techniques to improve the efficiency of highly multiplexed fibre systems for astronomical spectroscopy. This is particularly important for the implementation of diverse field spectroscopy (DFS) using highly multiplexed monolithic fibre systems (MFS). DFS allows arbitrary distributions of target regions to be addressed to optimize observing efficiency when observing complex, clumpy structures such as protoclusters which will be increasingly accessible to extremely large telescopes. We show how the adoption of various types of remapping between the input and output of an MFS can allow contiguous regions of spatial elements to be selected using only simple switch arrays. Finally, we show how this compares in efficiency with integral-field and multi-object spectroscopy by simulations using artificial and real catalogues of objects. With the adoption of these mapping strategies, DFS outperforms other techniques when addressing a range of realistic target distributions. These techniques are also applicable to biomedical science and were in fact inspired by it.

Item Type:Article
Keywords:Instrumentation, Spectograph, Spectroscopic, Telescope.
Full text:PDF - Other (1668Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1111/j.1365-2966.2009.15296.x
Publisher statement:The definitive version is available at www.blackwell-synergy.com
Record Created:29 Nov 2012 15:20
Last Modified:01 Aug 2014 12:33

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