24 September 2012 KOALA: a wide-field 1000 element integral-field unit for the Anglo-Australian Telescope
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Abstract
KOALA, the Kilofibre Optimised Astronomical Lenslet Array, is a wide-field, high efficiency integral field unit being designed for use with the bench mounted AAOmega spectrograph on the AAT. KOALA will have 1000 fibres in a rectangular array with a selectable field of view of either 1390 or 430 sq. arcseconds with a spatial sampling of 1.25" or 0.7" respectively. To achieve this KOALA will use a telecentric double lenslet array with interchangeable fore-optics. The IFU will feed AAOmega via a 31m fibre run. The efficiency of KOALA is expected to be ≈ 52% at 3700A and ≈ 66% at 6563°Å with a throughput of > 52% over the entire wavelength range.
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S. C. Ellis, M. Ireland, J. S. Lawrence, J. Tims, N. Staszak, J. Brzeski, Q. A. Parker, R. Sharp, J. Bland-Hawthorn, S. Case, M. Colless, S. Croom, W. Couch, O. De Marco, K. Glazebrook, W. Saunders, R. Webster, D. B. Zucker, "KOALA: a wide-field 1000 element integral-field unit for the Anglo-Australian Telescope", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84460V (24 September 2012); doi: 10.1117/12.925812; https://doi.org/10.1117/12.925812
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Radon

Telescopes

Astronomy

Spectrographs

Galactic astronomy

Microlens array

Staring arrays

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