Wavelength Calibration The Th-Ar lamp installed in the pre-slit area provides enough weak Th emission lines for wavelength ... The iodine cell consists of a vacuum vessel including the cell, itself, and a temperature controller. ... the cell with a heater to 55Ad C. The details of this instrument have been reported by Kambe et al. (2002). The light monitor consists of optics, ... 6] 861 HDS for the Subaru Telescope.
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