Table 1: Summary of the observations. The fourth column lists the seeing at 0.5 $\mu $m as measured by the DIMM monitor. Distances are calculated from Hipparcos parallaxes.
Object UT AM Seeing d [pc]
26 December 2001:        
HD 81797 7:09 1.08 0 $.\!\!^{\prime\prime}$57  
HD 100546 7:25 1.42 0 $.\!\!^{\prime\prime}$76 103+7-6
HD 104237 7:51 1.60 0 $.\!\!^{\prime\prime}$84 116+8-7
HD 81797 8:50 1.12 0 $.\!\!^{\prime\prime}$70  
19 March 2003:        
HD 55865 2:23 1.46 0 $.\!\!^{\prime\prime}$94  
HD 97048 3:02 1.51 0 $.\!\!^{\prime\prime}$93 175+27-21
HD 63295 3:33 1.55 0 $.\!\!^{\prime\prime}$93  


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