  In this paper an approximation of the image of the closed ball of the space
$L_p$ $(p>1)$ centered at the origin with radius $r$ under Hilbert-Schmidt
integral operator $F(\cdot):L_p\rightarrow L_q$ $\displaystyle
\left(\frac{1}{p}+\frac{1}{q}=1\right)$ is presented. An error estimation for
given approximation is obtained.
