The wide integral field infrared spectrograph

Commissioning results and on-sky performance

Suresh Sivanandam, Dae Sik Moon, R. Elliot Meyer, Jason Grunhut, Dennis F Zaritsky, Joshua A Eisner, Ke Ma, Charles Henderson, Basil Blank, Chueh Yi Chou, Miranda E. Jarvis, Stephen Eikenberry, Moo Young Chun, Byeong Gon Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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.

Original languageEnglish (US)
Title of host publicationGround-based and Airborne Instrumentation for Astronomy VII
EditorsLuc Simard, Luc Simard, Christopher J. Evans, Hideki Takami
PublisherSPIE
Volume10702
ISBN (Print)9781510619579
DOIs
StatePublished - Jan 1 2018
EventGround-based and Airborne Instrumentation for Astronomy VII 2018 - Austin, United States
Duration: Jun 10 2018Jun 14 2018

Other

OtherGround-based and Airborne Instrumentation for Astronomy VII 2018
CountryUnited States
CityAustin
Period6/10/186/14/18

Fingerprint

Infrared spectrographs
Commissioning
Spectrograph
spectrographs
sky
Optical resolving power
Infrared
Infrared radiation
Galaxies
Telescopes
supernova remnants
Spectrographs
Adaptive optics
Supernovae
telescopes
galaxies
Infrared imaging
Image quality
Stars
Telescope

Keywords

  • image slicer
  • infrared instrumentation
  • integral field spectroscopy
  • near-infrared

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Sivanandam, S., Moon, D. S., Meyer, R. E., Grunhut, J., Zaritsky, D. F., Eisner, J. A., ... Park, B. G. (2018). The wide integral field infrared spectrograph: Commissioning results and on-sky performance. In L. Simard, L. Simard, C. J. Evans, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VII (Vol. 10702). [1070218] SPIE. https://doi.org/10.1117/12.2312223

The wide integral field infrared spectrograph : Commissioning results and on-sky performance. / Sivanandam, Suresh; Moon, Dae Sik; Meyer, R. Elliot; Grunhut, Jason; Zaritsky, Dennis F; Eisner, Joshua A; Ma, Ke; Henderson, Charles; Blank, Basil; Chou, Chueh Yi; Jarvis, Miranda E.; Eikenberry, Stephen; Chun, Moo Young; Park, Byeong Gon.

Ground-based and Airborne Instrumentation for Astronomy VII. ed. / Luc Simard; Luc Simard; Christopher J. Evans; Hideki Takami. Vol. 10702 SPIE, 2018. 1070218.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sivanandam, S, Moon, DS, Meyer, RE, Grunhut, J, Zaritsky, DF, Eisner, JA, Ma, K, Henderson, C, Blank, B, Chou, CY, Jarvis, ME, Eikenberry, S, Chun, MY & Park, BG 2018, The wide integral field infrared spectrograph: Commissioning results and on-sky performance. in L Simard, L Simard, CJ Evans & H Takami (eds), Ground-based and Airborne Instrumentation for Astronomy VII. vol. 10702, 1070218, SPIE, Ground-based and Airborne Instrumentation for Astronomy VII 2018, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2312223
Sivanandam S, Moon DS, Meyer RE, Grunhut J, Zaritsky DF, Eisner JA et al. The wide integral field infrared spectrograph: Commissioning results and on-sky performance. In Simard L, Simard L, Evans CJ, Takami H, editors, Ground-based and Airborne Instrumentation for Astronomy VII. Vol. 10702. SPIE. 2018. 1070218 https://doi.org/10.1117/12.2312223
Sivanandam, Suresh ; Moon, Dae Sik ; Meyer, R. Elliot ; Grunhut, Jason ; Zaritsky, Dennis F ; Eisner, Joshua A ; Ma, Ke ; Henderson, Charles ; Blank, Basil ; Chou, Chueh Yi ; Jarvis, Miranda E. ; Eikenberry, Stephen ; Chun, Moo Young ; Park, Byeong Gon. / The wide integral field infrared spectrograph : Commissioning results and on-sky performance. Ground-based and Airborne Instrumentation for Astronomy VII. editor / Luc Simard ; Luc Simard ; Christopher J. Evans ; Hideki Takami. Vol. 10702 SPIE, 2018.
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