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. Author manuscript; available in PMC: 2017 Jun 2.
Published in final edited form as: Astrophys J Suppl Ser. 2017 Jan 20;228(1):10. doi: 10.3847/1538-4365/228/1/10

Table 3.

Echelle Spectra of Custom Water-cooled HCD Lamp

Index Date Serial Numbersa Buffer Gas and Pressure Lamp Current Wavelength Range Resolving Power Coadds Exposure Time Relative Radiometric Calibration
51–55 2016 Feb 25 1, 3, 5, 7, 9 Ne 7.0 mmHg 100 mA 2100–3200 Å 250,000 714 0.18 s D2 lamp checked against AMA
56–60 2016 Mar 11 1, 3, 5, 7, 9 Ne 7.5 mmHg 20 mA 2100–3200 Å 250,000 231 2.6 s D2 lamp checked against AMA

Note.

a

At least three CCD frames are needed to capture a complete echelle grating order in the UV. In the above data, five CCD frames are used to provide redundancy and a check for lamp drift.