IRCS Echelle Spectroscopy

The IRCS echelle provides a pixel scale of 55 mas along the slit and slit widths of 0.14'', 0.27'' (providing half the spectral resolution), or 0.54'' (providing one-quarter the spectral resolution). The camera can be used as a slit viewer.

An ALADDIN III array was installed in the spectrograph section during August 2003, providing improved performance, especially for faint sources.

IRCS relies on AO188 for guiding without a separate autoguider. Please refer to the Guide to exposure time page for more information.

• Echelle configurations and sensitivities
• Wavelength coverage of the echelle orders
• Sample images and response functions PDF (9Mb) HTML
• Echelle Simulator v.0.9.1 for IRCS README Package (New)
• Guide to exposure times