Astronomy & Astrophysics

Table 1: Asymptotic dependency of image motion variance $\Delta ^2$ on S and D.
Table 2: Linear configurations of effective angular size $\rho =1'$ and k-order virtual symmetry.
Table 3: Weights a_i symmetrizing a stellar group (Pravdo & Shaklan 1996) to $k=2 \ldots 8$ orders.
Table 4: Coefficients of Eq. (51) for different star density.
Table 5: Wind velocity model taken from Avila et al. (2001).
Table 6: The variance $\Delta$ ( $\mu$ as) integrated over the atmosphere for star configurations "a-h'' of Table 1 and continuous field "c.f.'' for some k and $\nu$ parameters; T=10 min; $\rho =1'$ .
Table 7: The variance $\Delta$ ( $\mu$ as) for the star field of Table 3 at 10 min exposure.