Table 1: IOTA observations for R CrB. $B_{\rm p}$: projected baseline length, PA: position angle of the projected baseline, $N_{\rm T}$: number of interferograms acquired for the target, $N_{\rm R}$: number of interferograms acquired for the reference star, T: exposure time of each frame.
  2001 Jun. 05, 06
JD 2452067, 2452068
V (mag) 6
$B_{\rm p}$ 21.2 m
PA 167$^{\circ}$
Spectral resolution ( $\lambda/\Delta \lambda$) $\sim$30
Reference star HD 143393, HR 5877
$N_{\rm T}$ 7700
$N_{\rm R}$ 5000
T(ms) 300


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