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ITC, Sensitivity and Overheads

The Integration Time Calculator (ITC) can be used to determine limiting magnitudes, exposure times, S/N ratios, background levels, etc. for a wide range of source properties, observing conditions, filters, and GMOS configurations. The ITC was used to generate tables of sensitivity estimates for imaging and spectroscopy modes. The R831 grating is not included in these example sensitivity estimates but is available for science use and is included in the ITC.


  • GMOS-North ITC
  • GMOS-South ITC
  • Sensitivity Table (Imaging)
  • Sensitivity Table (Spectroscopy)
  • Atmospheric Differential Refraction
  • Overheads
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