**Table 4:** Aperture polarization results for comet 2P/Encke.
$\begin{displaymath}\begin{tabular}{lccrr@{$~\pm~$}l} \hline \hline Nov. & Filt... ...& 7.43 & 0.08\\ & $V$ & && 9.12 & 0.07\\ \hline \end{tabular}\end{displaymath}$

	1 Introduction
	2 Observations, instruments and data reduction
	3 Results of polarization measurements
	4 Discussion
	5 Conclusions
	References