**Table 2:** Relevant parameters of the calibrators used for VINCI observations of Achernar (continued from Table 1). The references are the same as in Table 1.
Name	$\epsilon$ Ind A	$\alpha$ Cet	$\upsilon$ Cet
HD number	HD 209100	HD 18884	HD 12274
$m_{\rm V}$	4.7	2.5	4.0
$m_{\rm K}$	2.2	-1.7	0.0
Sp. type	K4.5V	M1.5IIIa	K5/M0III
$\rm T_{{\rm eff}}$ (K)	4500	3730	-
$\log g$	4.5	-	-
$v~\sin i$ (km s^-1)	1	-	-
${\theta_{\rm {LD}}}$ (mas)^a	$1.89 \pm 0.02$	-	-
${\theta_{\rm {UD}}}$ (mas)^b	$1.84 \pm 0.02$	$11.6 \pm 0.40$	$5.3 \pm 0.5$

^a The angular diameter of $\epsilon$ Ind A was measured by Kervella et al. (2004b). ^b The uniform disk angular sizes of $\alpha$ Cet and $\upsilon$ Cet were taken from Dyck et al. (1998) and Richichi & Percheron (2005), respectively.

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