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<!-- DOI: 10.1051/0004-6361/200912334 -->

<h2 class="sec">Online Material</h2>

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<A NAME="tab:jktlog"></A><p class="inset-old"><a href="/articles/aa/full_html/2009/35/aa12334-09/table3.html"><span class="bold">Table 3:</span></a>&#160;&#160;
<I>V</I>-band data used for examining the secular decrease in luminosity of the Crab Pulsar.
</p><A NAME="tab:trendmags"></A><p class="inset-old"><a href="/articles/aa/full_html/2009/35/aa12334-09/table4.html"><span class="bold">Table 4:</span></a>&#160;&#160;
<I>UBVRIz</I> magnitudes of the eight field stars examined in the secular decrease of luminosity of the pulsar.</p>
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<tr><td><!-- init Label --><A NAME="fig:trendstars">&#160;</A><!-- end Label--><A NAME="596"></A><A NAME="figure516"
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<td class="img-txt"><span class="bold">Figure 4:</span><p>
The stars that were chosen for relative photometry in the investigation of the secular decrease in luminosity. The numbering is the same as in Table&nbsp;<a href="/articles/aa/full_html/2009/35/aa12334-09/aa12334-09.html#tab:trendmags">4</a> where the <I>UBVRIz</I> magnitudes for these stars are given. The numbering is also used in Table&nbsp;<a href="/articles/aa/full_html/2009/35/aa12334-09/aa12334-09.html#tab:jktlog">3</a>. The pulsar is number eight. This <I>V</I>-band image was acquired with the JKT on February 7, 1990. North is up and east is to the left. The field of view is approximately 3.2 by 2.1 arcmin.</p></td>
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