Celestial coordinates
Below you will find suggestions of standard stars that can be adopted for both telluric and continuum correction for the observations of $\eta$ Car.
| star | $\alpha$ (J2000) | $\delta$ (J2000) |
|---|---|---|
| ${\rm \eta}$ Car | 10 45 03.591 | -59 41 04.26 |
| star | Spectral type | $\alpha$ (J2000) | $\delta$ (J2000) | Notes |
|---|---|---|---|---|
| HD 93030 (${\rm \theta}$ Car) | B0 V | 10 42 57.402 | -64 23 40.02 | |
| HD 108248 (${\rm \alpha}$1 Cru) | B0.5 IV | 12 26 35.871 | -63 05 56.58 | Same airmass 1.5 h after ${\rm \eta}$ Car |
| HD 89080 (${\rm \omega}$ Car) | B8 III | 10 13 44.217 | -70 02 16.46 | No He II ${\rm \lambda}$4686 |
