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Table 1

Details of the different instrument configurations.

Instrument λ λ c Δλ Spec.
configuration (Å) (Å/pix) wind.

Thomson 1800G 11 000 6600 0.194 200 Å
Thomson 1800G 11 000 4686 0.206 200 Å
Thomson 600C 2500 4650 0.616 650 Å
Jobin-Yvon 600C 2500 4650 0.438 900 Å
KPNO Coudé feed ~12 000 6750 0.217 650 Å

Notes. Listed are the configuration of the instrument, the spectral dispersion (λλ), the central wavelength (λc), the one-pixel CCD resolution (Δλ), and the width of the spectral window for the given instrumental setup.

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