IGRINS-2

Capability Summary

Spectroscopy

• Resolution
  • R~45,000
• Modes
  • Single slit with size: 0.33ʺ x 5ʺ
  • Total wavelength range: 1.49 - 2.46 µm in one exposure [split between 1.49-1.80µm (H-band) and 1.96-2.46µm (K-band)]
• Sensitivity
  • Commissioning data show that a S/N of ~100 per resolution element is achievable with a 3600 sec exposure for point sources with a K-band of 13.5 mag.

Guiding Options (Read more)

• PWFS2
• Possibility of including on instrument Slow Guiding using the Slit Viewing Camera

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The Immersion GRating INfrared Spectrograph 2 (IGRINS-2) is a compact high-resolution near-IR spectrograph installed in the Cassegrain focus of the Gemini North telescope. The instrument, which concept was based on the original IGRINS design, has been developed and built by a collaboration between Korea Astronomy and Space Science Institute (KASI) and the International Gemini Observatory. It makes use of a silicon immersion grating as the main disperser and two VPH gratings as cross-dispersers. The instrument covers all of the H and K bands simultaneously with a resolving power of R ~ 45,000 and a single 3-pixel slit. The First light was achieved in October 2023 and commissioning was completed in April 2024.