UNSWIRF: A tunable imaging spectrometer for the near-infrared

Stuart D. Ryder*, Yin-Sheng Sun, Michael C. B. Ashley, M. G. Burton, Lori E. Allen, John W. V. Storey

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


We describe the specifications, characteristics, calibration, and analysis of data from the University of New South Wales Infrared Fabry-Perot (UNSWIRF) etalon. UNSWIRF is a near-infrared tunable imaging spectrometer, used primarily in conjunction with IRIS on the AAT, but suitable for use as a visitor instrument at other telescopes. The etalon delivers a resolving power in excess of 4000 (corresponding to a velocity resolution ∼75 km s-1), and allows imaging of fields up to 100″ in diameter on the AAT at any wavelength between 1.5 and 2.4 μm for which suitable blocking filters are available.

Original languageEnglish
Pages (from-to)228-239
Number of pages12
JournalPublications of the Astronomical Society of Australia
Issue number2
Publication statusPublished - 1 Jan 1998
Externally publishedYes


  • Infrared: ISM, lines
  • Instrumentation: miscellaneous
  • Methods: data analysis


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