Making a Wide Integral Field Infrared Spectrograph

Dr. Suresh Sivanandam, Dunlap Institute

Infrared integral field spectrographs have become a very important tool in understanding the nature of high redshift Universe. But due to their small field-of-view, they are very limited when it comes to observing nearby more extended objects. The near-infrared band has many interesting spectral features that offer new insights in star forming regions and supernova remnants within our galaxy all the way to nearby galaxies.

I will talk about the design and development of a new instrument we are building here called WIFIS (wide integral field infrared spectrograph). WIFIS will peer into the near-infrared window (0.9-1.8 um) and complement large optical integral field spectroscopic surveys like CALIFA and MaNGA with its large 50”x20” field and a spectral resolving power of ~3,000. Our current plan is to assemble and test the instrument this summer. WIFIS will then be taken to Arizona to be installed on the Bok 90” telescope at Kitt Peak.

Suresh IIRG detector_8557_600px