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

Poppett, C.L.; Allington-Smith, J.R.; Murray, G.J.


C.L. Poppett

J.R. Allington-Smith


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.


Poppett, C., Allington-Smith, J., & Murray, G. (2009). Strategies for spectroscopy on extremely large telescopes - III. Remapping switched fibre systems. Monthly Notices of the Royal Astronomical Society, 399(1), 443-452.

Journal Article Type Article
Publication Date Oct 1, 2009
Deposit Date Nov 29, 2012
Publicly Available Date Jan 4, 2013
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 399
Issue 1
Pages 443-452
Keywords Instrumentation, Spectograph, Spectroscopic, Telescope.


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