COMICS high-resolution Q-band spectroscopy

The high-resolution Q-band grating provides a resolution of 5300 (0.50'' slit) and a dispersion of 0.00058 um/pixel. Spectroscopy can only be performed where narrow-band filters are available and is, at present, limited to the 16.9-17.1 um region. The spectrum is dispersed onto the 3rd of the COMICS spectrograph's 5 detectors.

The point-source sensitivity of the QH grating varies with wavelength and is shown in the following figure (1 sigma for 1 second of on-source integration time per pixel).



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