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	<title>Supporting IYA 2009 The International Year of Astronomy &#187; comet</title>
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		<title>Comet Lulin Images, Near Regulus In Leo</title>
		<link>http://iya2009.com/comet-lulin-images-near-regulus-in-leo.html</link>
		<comments>http://iya2009.com/comet-lulin-images-near-regulus-in-leo.html#comments</comments>
		<pubDate>Sat, 28 Feb 2009 12:32:40 +0000</pubDate>
		<dc:creator>Kevin Brown</dc:creator>
				<category><![CDATA[Comets]]></category>
		<category><![CDATA[Imaging Techniques]]></category>
		<category><![CDATA[Stars]]></category>
		<category><![CDATA[comet]]></category>
		<category><![CDATA[imaging]]></category>
		<category><![CDATA[leo]]></category>
		<category><![CDATA[lulin]]></category>
		<category><![CDATA[ufo]]></category>

		<guid isPermaLink="false">http://iya2009.com/?p=434</guid>
		<description><![CDATA[At last, the skies over Kent cleared last night for a few hours.  I was finally able to photograph Comet Lulin.
This is something of a relief&#8230;  
For the past three weeks, I&#8217;ve been making maps of Lulin&#8217;s projected position for literally thousands of visitors.
What if I hadn&#8217;t seen it myself?
 
Anyway, I have now.  :)
The image on [...]]]></description>
			<content:encoded><![CDATA[<p>At last, the skies over Kent cleared last night for a few hours.  I was finally able to <strong>photograph Comet Lulin</strong>.</p>
<p>This is something of a relief&#8230;  </p>
<p>For the past three weeks, I&#8217;ve been <a title="Comet Lulin maps" href="http://iya2009.com/new-comet-lulin-to-observe-this-month.html">making maps of Lulin&#8217;s projected position</a> for literally thousands of visitors.</p>
<div id="attachment_435" class="wp-caption alignright" style="width: 310px"><a href="http://iya2009.com/wp-content/uploads/2009/02/cometlulinregulusandstreak_600lowres.jpg"><img class="size-medium wp-image-435 " title="Comet Lulin and Regulus, plus streak. Feb 27 by Kevin Brown" src="http://iya2009.com/wp-content/uploads/2009/02/cometlulinregulusandstreak_600lowres-300x299.jpg" alt="Lulin close to Regulus, plus &quot;streak&quot;, Feb 27th" width="300" height="299" /></a><p class="wp-caption-text">Lulin close to Regulus, plus &quot;streak&quot;, Feb 27th</p></div>
<p>What if I hadn&#8217;t seen it myself?</p>
<p> </p>
<p>Anyway, I have now.  :)</p>
<p>The image on the right shows Lulin close to the star Regulus, in the constellation of Leo.</p>
<p>Between them is an <strong>orange  &#8221;streak&#8221;</strong>.  I&#8217;m not sure exactly what it was, probably an aircraft.  But it&#8217;s interesting.</p>
<p>(PS. It has since been pointed out&#8230; if you look carefully, you can see the periodically flashing white and double-red lights, of a high-flying aircraft)</p>
<p>The image was captured with my Canon 1000D dslr camera, through the ED80 600 mm focal length refractor.  </p>
<p>It&#8217;s a <strong>single frame</strong> of 2 minute exposure at ISO 800.</p>
<p> </p>
<p>I actually took about 15 frames with different exposure times.  I shall try my hand at stacking some of the best, to see if I can produce better images after processing.</p>
<p>Here&#8217;s the <strong>best single frame shot of Lulin</strong> I have found, so far.  It was a 3 minute exposure.  You can see from the star shapes, there is some tracking error.  I need to work on a better North alignment of the mount.</p>
<p> </p>
<div id="attachment_439" class="wp-caption aligncenter" style="width: 310px"><a href="http://iya2009.com/wp-content/uploads/2009/02/cometlulinfeb27_600lowres.jpg"><img class="size-medium wp-image-439 " title="Comet Lulin on Feb 27 by Kevin Brown" src="http://iya2009.com/wp-content/uploads/2009/02/cometlulinfeb27_600lowres-300x234.jpg" alt="Comet Lulin, February 27th (click for larger)" width="300" height="234" /></a><p class="wp-caption-text">Comet Lulin, February 27th (click for larger)</p></div>
]]></content:encoded>
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		</item>
		<item>
		<title>New Comet (Lulin) To Observe This Month</title>
		<link>http://iya2009.com/new-comet-lulin-to-observe-this-month.html</link>
		<comments>http://iya2009.com/new-comet-lulin-to-observe-this-month.html#comments</comments>
		<pubDate>Thu, 05 Feb 2009 13:02:31 +0000</pubDate>
		<dc:creator>Kevin Brown</dc:creator>
				<category><![CDATA[Comets]]></category>
		<category><![CDATA[Objects To Observe]]></category>
		<category><![CDATA[closest approach]]></category>
		<category><![CDATA[comet]]></category>
		<category><![CDATA[libra]]></category>
		<category><![CDATA[lulin]]></category>
		<category><![CDATA[saturn]]></category>
		<category><![CDATA[virgo]]></category>
		<category><![CDATA[Zubenelgenubi]]></category>

		<guid isPermaLink="false">http://iya2009.com/?p=343</guid>
		<description><![CDATA[A new comet enters our skies in February. 
Comet Lulin (2007 N3) is speeding towards the Earth, at present.  It will get closest to us on February 24th and be  less than half the Earth-Sun distance away.  Then it heads away again, out into our Solar System and by early April, Lulin will have already [...]]]></description>
			<content:encoded><![CDATA[<p><strong>A new comet enters our skies in February. </strong></p>
<p><strong>Comet Lulin (2007 N3)</strong> is speeding towards the Earth, at present.  It will get closest to us on February 24th and be  less than half the Earth-Sun distance away.  Then it heads away again, out into our Solar System and by early April, Lulin will have already crossed the orbit of Mars.</p>
<div id="attachment_344" class="wp-caption alignright" style="width: 310px"><a href="http://iya2009.com/wp-content/uploads/2009/02/cometlulin6febinlibra.png"><img class="size-medium wp-image-344" title="Comet Lulin on 6th Feb in Libra" src="http://iya2009.com/wp-content/uploads/2009/02/cometlulin6febinlibra-300x225.png" alt="Comet Lulin, before dawn 6th February, in Libra" width="300" height="225" /></a><p class="wp-caption-text">Comet Lulin, before dawn 6th February, in Libra</p></div>
<p>The comet is called Lulin, after the observatory in Taiwan where the image of its approach was captured.  It was actually discovered in 2007, by a Chinese meteorology student Quanzhi Ye.</p>
<p> </p>
<p>The good news for amateur astronomers is, Comet Lulin should be easily observable with binoculars or a small telescope.  </p>
<p><strong>Here are some sky maps</strong> I&#8217;ve made using <a title="stellarium website" href="http://www.stellarium.org/" target="_blank">Stellarium</a> software, for three particular dates in February (click each image, for a larger version).<span id="more-343"></span></p>
<p>They show where to look for Lulin, in the skies before dawn.  </p>
<p>Between these specific dates, the comet will move between the positions marked, following a smooth path.</p>
<p><strong>The first map shows Lulin before dawn on 6 Feb</strong>, next to the double star <strong>Zubenelgenubi</strong> in the constellation of Libra.  This will be low in the South East.</p>
<p> </p>
<p> </p>
<div id="attachment_345" class="wp-caption alignright" style="width: 310px"><a href="http://iya2009.com/wp-content/uploads/2009/02/cometlulin16febnearspica.png"><img class="size-medium wp-image-345" title="cometlulin16febnearspica" src="http://iya2009.com/wp-content/uploads/2009/02/cometlulin16febnearspica-300x225.png" alt="Comet Lulin, before dawn 16th February, near Spica in Virgo" width="300" height="225" /></a><p class="wp-caption-text">Comet Lulin, before dawn 16th February, near Spica in Virgo</p></div>
<p><strong>By 16 February</strong>, the comet will be observable in the constellation of <strong>Virgo</strong>, near the bright star <strong>Spica</strong>.</p>
<p>The comet should appear noticably green.  </p>
<p>The colour comes from gases gushing out from the nucleus of the comet, as it is heated by the Sun&#8217;s rays.</p>
<p>Because of the chemical composition of the gases, they will appear green, under the intense radiation from the Sun.  </p>
<p>However, this is the first time Comet Lulin has come into the Solar System, so it&#8217;s not certain actually how it will behave.  To find out how big and bright it gets in our skies, we shall have to wait and see!</p>
<p> </p>
<p><strong>Here is the third map.</strong></p>
<div id="attachment_349" class="wp-caption alignright" style="width: 310px"><a href="http://iya2009.com/wp-content/uploads/2009/02/cometlulin24febsaturn.png"><img class="size-medium wp-image-349" title="cometlulin24febsaturn" src="http://iya2009.com/wp-content/uploads/2009/02/cometlulin24febsaturn-300x225.png" alt="Lulin near to Saturn, on 24 February" width="300" height="225" /></a><p class="wp-caption-text">Lulin near to Saturn, on 24 February</p></div>
<p>By<strong> 24 February</strong>, Lulin should appear close to the planet Saturn.</p>
<p>This might make a particularly good astro imaging opportunity, although the rings of Saturn appear rather &#8220;edge-on&#8221; to us at present, so the great planet will not be arrayed in its full glory.</p>
<p>Nevertheless, I shall be trying for a nice image with the <a title="Canon 1000d dslr plus Skywatcher ed-80" href="http://iya2009.com/skywatcher-eq6-ed80-plus-canon-1000d.html">Canon/Skywatcher combination</a>.</p>
<p><strong>I hope these maps help you find Lulin in the sky,  during February.</strong></p>
<p><strong>If you do manage to get a good view of Lulin on any day, please let me know by leaving a comment on this post.</strong></p>
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