Disclaimer: I have scanned in a couple of my arc identifications for some of the instruments I've used in my own research in the hope that they may be of use to others reducing data from these instruments. I do not guarantee any sort of accuracy, but my wavelength solutions using these IDs typically produce rms errors of < 0.3 Angstroms. I have provided these as a GUIDE only. Any questions can be referred to me at .

DEIMOS on Keck II

NeArKrXe arcs - 1.3s exposures 600 l/mm grating (7500 Angstrom blaze), 0.7 arcsec slit width (Note that there will be a wavelength shift depending on both the PA and location of your slitlet on the chip) DEIMOS Blue_1 (5200 - 6050 Å) plot DEIMOS Blue_2 (6000 - 7100 Å) plot DEIMOS Red_1 (7100 - 8500 Å) plot DEIMOS Red_2 (8500 - 9750 Å) plot for info on DEIMOS, see the DEIMOS Home Page

ESI on Keck II

CuAr arcs - 900s exposures (good for blue side of chip) HgNe arcs - 3 sec (becomes important at 5750 Angstroms) Xe arcs - 2 sec (becomes important at 8000+ Angstroms) (I added all three of these arcs together to cover the greatest wavelength range possible. The following plots are how my arcs appeared with this combination of exposure times. I tried to make note of which lines come from which arcs when possible.) Setup: Low Dispersion, 1 arcsec slit width CuAr arc Blue (4000 - 5100 Å) plot CuAr arc Red (5100 - 8525 Å) plot HgNeCuAr arcs Red (5750 - 6550 Å) plot - HgNe is dominant over the wavelength range 5750 - 6700. HgNeXeCuAr arcs Red (6550 - 9200 Å) plot - HgNe are marked in black, Xe are marked in green, and CuAr are marked in purple. for info on ESI, see the Keck ESI Home Page

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