6 June 2005
Michael Richer
Recently we bought CuHeNeAr lamps to replace the HeAr lamps that have been used with the Boller & Chivens and Bolitas spectrographs for many years. On 5 June 2005, I obtained spectra of this lamp with the 300/4.30, 400/9.73, and 1200/26.1 gratings covering the entire optical spectral range. These lamps have a line density that is very good for the 1200/26.1 grating. For the 300/4.30 grating, a selection of isolated lines will be necessary. For the 150 l/mm gratings, an even more careful line selection will be necessary. Alternatively, the HgAr lamp can be used, which has a much lower line density.
Based upon the 1200/26.1 grating spectra, I compiled a line atlas. The following table provides plots of different portions of the entire spectrum, with and without line identifications. I also put together a composite spectra that is calibrated in wavelength (in FITS format; for display in splot/IRAF) as well as a list of lines for Cu, He, Ne, and Ar from the NIST database (http://physics.nist.gov/PhysRefData/ASD/). The list is in the format used within IRAF as a line list. In the line list, the lines that were used/identified are indicated. The dispersion solutions generally had dispersions of less than a sixth of a pixel.
It is a pleasure to acknowledge Felipe Montalvo’s help in collecting these data.
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spectrum |
file |
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the entire optical (no line indentifications) |
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the ultraviolet (no line identifications) |
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the blue (no line identifications) |
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the red (no line identifications) |
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the 3400-4400A interval (identified) |
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the 4400-5400A interval (identified) |
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the 5400-6400A interval (identified) |
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the 6300-7300A interval (identified) |
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the 7200-8300A interval (identified) |
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the 8000-9100A interval (identified) |
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the 9000-10000A interval (identified) |
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the 9600-10600A interval (identified) |
