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$\begin{figure} \par\includegraphics[width=16cm,clip]{fig_lsi+61303_corte1.ps} \end{figure}$ Figure 1: The microquasar LS I ${+61^\circ 303}$ shot out at a velocity of $27\pm 6$ km s^-1 from the stellar cluster IC 1805 by the kick imparted to the compact object in a natal asymmetric supernova explosion. In this optical image (DSS, R filter) of the sky, LS I ${+61^\circ 303}$ is shown inside the red ellipse, and the confirmed member stars of IC 1805 with masses in the range of 7-85 $M_{\odot }$ (Massey et al. 1995; Shi & Hu 1999) are shown inside yellow symbols. The green arrow represents the motion in the sky of the radio counterpart of LS I ${+61^\circ 303}$ for the last 1 million years. The yellow arrow represents the average Hipparcos motion of the 13 brightest stars of the cluster in the Hipparcos catalog (Dambis et al. 2001), which are shown here inside yellow squares. The red arrow shows the motion of the X-ray binary relative to the cluster of massive stars for the last 1 million years.
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