Differential image motion in astrometric observations with very large seeing-limited telescopes

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Table 3

FORS2 variances A_F(k), Ā_F(k) [mas]², and a scaling factor $\bar{τ} (k)$ $\[\bar{\tau}(k)\]$ defined, respectively, by Eqs. (29), (32) and (31).

Parameter	k/β

	6/2	8/3	10/4	12/5	14/6	Mixed modes
A_F(k)	0.702	0.675	0.806	0.751	0.844	0.715
Ā_F(k)	0.692	0.672	0.806	0.760	0.817	0.703
$\bar{τ} (k)$ $\[\bar{\tau}(k)\]$	1.004	0.975	1.069	1.008	1.057	1.002

uncert.-y	±0.003	±0.003	±0.006	±0.008	±0.013	0.002

Notes. The uncertainties are valid for each term.

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