Astronomy & Astrophysics

Table 1: Determination of the transmission correction slope $\gamma$ of the VINCI/VLTI combination as observed on bright stars with two 8-meters telescopes.
Peak position ( $\mu$ m) $\gamma$ ( $\mu$ m^-1)

$\alpha$ PsA 2.198 $\pm$ 0.002 1.140

HR 8685 (1) 2.190 $\pm$ 0.003 0.911

HR 8685 (2) 2.202 $\pm$ 0.008 1.119

$\gamma^{2}$ Vol 2.198 $\pm$ 0.007 1.076

$\epsilon$ Eri 2.197 $\pm$ 0.010 1.065

39 Eri 2.196 $\pm$ 0.010 1.076

Weighted average 1.076 $\pm$ 0.081

**Table 1:** Determination of the transmission correction slope $\gamma$ of the VINCI/VLTI combination as observed on bright stars with two 8-meters telescopes.
	Peak position ( $\mu$ m)	$\gamma$ ( $\mu$ m^-1)
$\alpha$ PsA	2.198 $\pm$ 0.002	1.140
HR 8685 (1)	2.190 $\pm$ 0.003	0.911
HR 8685 (2)	2.202 $\pm$ 0.008	1.119
$\gamma^{2}$ Vol	2.198 $\pm$ 0.007	1.076
$\epsilon$ Eri	2.197 $\pm$ 0.010	1.065
39 Eri	2.196 $\pm$ 0.010	1.076
	Weighted average	1.076 $\pm$ 0.081

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