KOALA, a wide-field 1000 element integral-field unit for the Anglo-Australian Telescope: assembly and commissioning

Ross Zhelem, Jurek Brzeski, Scott Case, Vladimir Churilov, Simon Ellis, Tony Farrell, Andrew Green, Anthony Heng, Anthony Horton, Michael Ireland, Damien Jones, Urs Klauser, Jon Lawrence, Stan Miziarski, David Orr, Naveen Pai, Nick Staszak, Julia Tims, Minh Vuong, Lew WallerPascal Xavier

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

8 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy V
EditorsSuzanne K. Ramsay, Ian S. McLean, Hideki Takami
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-6
Number of pages9
ISBN (Electronic)9780819496157
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventGround-Based and Airborne Instrumentation for Astronomy V - Montreal, Canada
Duration: 22 Jun 201426 Jun 2014

Publication series

NameProceedings of SPIE
Volume9147
ISSN (Print)0277-786X

Other

OtherGround-Based and Airborne Instrumentation for Astronomy V
CountryCanada
CityMontreal
Period22/06/1426/06/14

Keywords

  • image slicer
  • integral field unit
  • microlens array
  • optical fibres
  • spectroscopy

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