Table 1: Ultraviolet spectral atlases of the Sun and $\alpha$ Cen A.
Instrument Spectral Spectral Solar Flux Reference

Used Range (Å) Resolution Location Calibration

HRTS 1190-1730 0.05 Å quiet Sun $\pm$ 30% (1)

active Sun (1)

UVSP/SMM 1150-3600 $\sim$ 100 000 disk center (2)

SOHO/SUMER 465-1610 17 770-38 300 disk center $\pm$ 20% (3)

sunspot, CH $\pm$ 20% (3)

SOHO/CDS 150-800 0.3-0.6 Å slit on disk not given (4)

307-632 0.3-0.6 Å Sun-as-a-star 15-45% (5)

SOLSTICE/UARS 1190-4200 1-2 Å Sun-as-a-star $\pm$ 5% (6)

rocket EGS 300-1100 2 Å Sun-as-a-star $\pm$ 15% (7)

STIS E140H 1140-1670 114 000 $\alpha$ Cen A $\pm$ 5% (8)

(1) Brekke (1993b), (2) Shine & Frank (2000), Woodgate et al. (1980), (3) Curdt et al. (2001),
(4) http://solg2.bnsc.rl.ac.uk/atlas/atlas.shtml, (5) Brekke et al. (2000), (6) Rottman et al. (1993),
(7) EUV Grating Spectrograph, Woods & Rottman (1990), (8) Leitherer et al. (2001), Bohlin et al. (2001).