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Spectroscopy

Two types of spectroscopy are possible with FLAMINGOS-2 and its selection of gratings.

The current image quality issues, are affecting the spectral resolution. Therefore, we recommend PIs to consult the grisms link to obtain more information about how the spectral resolution changes with position and wavelegth. Based on this, we strongly suggest that all targets be located within the inner 90 arcsec radius of the center of the F2 FOV. Moreover, we also strongly advice to use similar dither patterns for the science and telluric targets.

Please note that due to the current Filters:

  • Y, J-low, J, H, Ks broad-band filter set permanently installed
  • We expect to have two narrow-band filters (wavelengths to be determined) also installed at any given time.
  • There is an upgrade path being investigated for the construction and installation of a dual-etalon tunable narrow-band filter to be used with the f/32 MCAO system.
  • Grisms:
    • Two lower resolution grisms (JH and HK) with R~1200 and simultaneously covering the J&H or H&K bands
    • One higher resolution grism with R~3000 (two pixel) giving complete coverage of one (Y or J or H or K) near-IR band at a time
  • Science detector for the FLAMINGOS-2 HAWAII-II array
  • Camera and Imaging Properties: