@inproceedings{29310ddfad844d738154c8cdacd205ff,
title = "The wide integral field infrared spectrograph: Commissioning results and on-sky performance",
abstract = "We have recently commissioned a novel infrared (0:9-1:7 μm) integral field spectrograph (IFS) called the Wide Integral Field Infrared Spectrograph (WIFIS). WIFIS is a unique instrument that offers a very large field-of-view (5000 x 2000) on the 2.3-meter Bok telescope at Kitt Peak, USA for seeing-limited observations at moderate spectral resolving power. The measured spatial sampling scale is ∼ 1 x 1{"} and its spectral resolving power is R ∼ 2; 500 and 3; 000 in the zJ (0:9 - 1:35 μm) and Hshort (1:5 - 1:7 μm) modes, respectively. WIFIS's corresponding etendue is larger than existing near-infrared (NIR) IFSes, which are mostly designed to work with adaptive optics systems and therefore have very narrow fields. For this reason, this instrument is specifically suited for studying very extended objects in the near-infrared such as supernovae remnants, galactic star forming regions, and nearby galaxies, which are not easily accessible by other NIR IFSes. This enables scientific programs that were not originally possible, such as detailed surveys of a large number of nearby galaxies or a full accounting of nucleosynthetic yields of Milky Way supernova remnants. WIFIS is also designed to be easily adaptable to be used with larger telescopes. In this paper, we report on the overall performance characteristics of the instrument, which were measured during our commissioning runs in the second half of 2017. We present measurements of spectral resolving power, image quality, instrumental background, and overall efficiency and sensitivity of WIFIS and compare them with our design expectations. Finally, we present a few example observations that demonstrate WIFIS's full capability to carry out infrared imaging spectroscopy of extended objects, which is enabled by our custom data reduction pipeline.",
keywords = "image slicer, infrared instrumentation, integral field spectroscopy, near-infrared",
author = "Suresh Sivanandam and Moon, \{Dae Sik\} and Meyer, \{R. Elliot\} and Jason Grunhut and Dennis Zaritsky and Joshua Eisner and Ke Ma and Charles Henderson and Basil Blank and Chou, \{Chueh Yi\} and Jarvis, \{Miranda E.\} and Stephen Eikenberry and Chun, \{Moo Young\} and Park, \{Byeong Gon\}",
note = "Publisher Copyright: {\textcopyright} 2018 SPIE.; Ground-based and Airborne Instrumentation for Astronomy VII 2018 ; Conference date: 10-06-2018 Through 14-06-2018",
year = "2018",
doi = "10.1117/12.2312223",
language = "English (US)",
isbn = "9781510619579",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Luc Simard and Luc Simard and Evans, \{Christopher J.\} and Hideki Takami",
booktitle = "Ground-based and Airborne Instrumentation for Astronomy VII",
}