TRISPEC Calibration Unit
Wavelength Calibaration Unit (WCU)
The instrument has a mercury-argon lamp (Hg-Ar lamp) for the wavelength
calibration at the front of the dawer window. Since the intensities of
emission lines vary largely as time passes after power on, it is recommended
to take a few frames with different passing times. Below are plots of the
arc spectra obtained with TRISPEC.
Also, a table of mercury and argon lines is available here.
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Last Modification Date: 2002/06/17
Last Modification Author: Makoto