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| Lamp spectra are composites of 5 1/5 sec exposures stacked using ImageStacker and calibrated using VisualSpec V3.06 software. The grating spectrograph slit width was set to .003" (76 microns)for these exposures. The optical elements were as follows : Collimator 140mm FL f/4 and exit optics a 112mm FL f/6.6 lens with a 1200lines/mm 25mm square reflection grating. |
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