Hectospec Wavelength Calibration

I made a set of reference comparison spectra for use with the MMT Observatory's Hectospec spectrograph. In my experience, Hectospec's helium-neon-argon (HeNeAr) lamps produce spectra that do not look like the the typical HeNeAr atlas spectra, largely because the helium lamps are stronger or weaker than usual. In addition, medium-resolution Hectospec spectra often use the PenRay mercury-neon-argon (HgNeAr) lamps, on their own or with the helium lamps also turned on, and HgNeAr spectral atlases were practically non-existent.

HeNeAr, Low-Resolution

270 lines/mm, full wavelength range

Complete spectrum (no labels)

3600–5900 Å (with labels)

5700–6800 Å (with labels)

6800–7800 Å (with labels)

7800–9150 Å (with labels)

HeNeAr, Medium-Resolution

600 lines/mm, centered at 6300 Å

Complete spectrum (no labels)

5100–5875 Å (with abels)

5840–6540 Å (with labels)

6500–7550 Å (with labels)

HgNeAr, Medium-Resolution

600 lines/mm, centered at 6300 Å

Complete spectrum (no labels)

5100–5875 Å (with labels)

5840–6540 Å (with labels)

6500–7550 Å (with labels)

HgNeAr + He, Medium-Resolution

600 lines/mm, centered at 6300 Å

Complete spectrum (no labels)

5100–5875 Å (with labels)

5840–6540 Å (with labels)

6500–7550 Å (with labels)