UNSWIRF: A Tunable Imaging Spectrometer for the Near-Infrared
  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), and allows imaging of fields up to 100" in diameter on the AAT at any wavelength between 1.5 and 2.4 microns for which suitable blocking filters are available. 
Stuart D. Ryder (1, 2), Yin-Sheng Sun (1), Michael C. B. Ashley (1),   Michael G. Burton (1), Lori E. Allen (1), and John W....