8 July 2014 KOALA, a wide-field 1000 element integral-field unit for the Anglo-Australian Telescope: assembly and commissioning
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Abstract
The KOALA optical fibre feed for the AAOmega spectrograph has been commissioned at the Anglo-Australian Telescope. The instrument samples the reimaged telescope focal plane at two scales: 1.23 arcsec and 0.70 arcsec per image slicing hexagonal lenslet over a 49x27 and 28x15 arcsec field of view respectively. The integral field unit consists of 2D hexagonal and circular lenslet arrays coupling light into 1000 fibres with 100 micron core diameter. The fibre run is over 35m long connecting the telescope Cassegrain focus with the bench mounted spectrograph room where all fibres are reformatted into a one-dimensional slit. Design and assembly of the KOALA components, engineering challenges encountered, and commissioning results are discussed.
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Ross Zhelem, Ross Zhelem, Jurek Brzeski, Jurek Brzeski, Scott Case, Scott Case, Vladimir Churilov, Vladimir Churilov, Simon Ellis, Simon Ellis, Tony Farrell, Tony Farrell, Andrew Green, Andrew Green, Anthony Heng, Anthony Heng, Anthony Horton, Anthony Horton, Michael Ireland, Michael Ireland, Damien Jones, Damien Jones, Urs Klauser, Urs Klauser, Jon Lawrence, Jon Lawrence, Stan Miziarski, Stan Miziarski, David Orr, David Orr, Naveen Pai, Naveen Pai, Nick Staszak, Nick Staszak, Julia Tims, Julia Tims, Minh Vuong, Minh Vuong, Lew Waller, Lew Waller, Pascal Xavier, Pascal Xavier, } "KOALA, a wide-field 1000 element integral-field unit for the Anglo-Australian Telescope: assembly and commissioning", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91473K (8 July 2014); doi: 10.1117/12.2055588; https://doi.org/10.1117/12.2055588
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