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	<title>90 MilliMeters &#187; Astrophotography</title>
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	<link>http://www.90mm.us</link>
	<description>Backyard Astronomy with Small Telescopes</description>
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		<title>Happy 129th anniversary to deep-sky astrophotography</title>
		<link>http://www.90mm.us/2009/09/30/happy-129th-anniversary-to-deep-sky-astrophotography/</link>
		<comments>http://www.90mm.us/2009/09/30/happy-129th-anniversary-to-deep-sky-astrophotography/#comments</comments>
		<pubDate>Wed, 30 Sep 2009 12:08:10 +0000</pubDate>
		<dc:creator>Dan</dc:creator>
				<category><![CDATA[Astrophotography]]></category>
		<category><![CDATA[Great Orion Nebula]]></category>
		<category><![CDATA[Henry Draper]]></category>

		<guid isPermaLink="false">http://www.90mm.us/?p=102</guid>
		<description><![CDATA[Henry Draper took the first successful photograph of the Great Orion Nebula on September 30, 1880 using his 11 inch Clark Brothers photographic refractor he took a 50 minute exposure. Draper was one of the pioneers of astrophotography and he took the first stellar spectrum in 1872 that showed absorption lines. Read more about Henry [...]]]></description>
			<content:encoded><![CDATA[<div id="attachment_104" class="wp-caption alignleft" style="width: 310px"><img class="size-medium wp-image-104" title="Henry_Draper" src="http://www.90mm.us/wp-content/uploads/2009/09/Henry_Draper1-300x248.jpg" alt="Henry Draper" width="300" height="248" /><p class="wp-caption-text">Henry Draper</p></div>
<p>Henry Draper took the first successful photograph of the <a href="http://en.wikipedia.org/wiki/Orion_Nebula" target="_blank">Great Orion Nebula</a> on September 30, 1880 using his 11 inch Clark Brothers photographic refractor he took a 50 minute exposure. Draper was one of the pioneers of <a href="http://en.wikipedia.org/wiki/Astrophotography" target="_blank">astrophotography</a> and he took the first stellar spectrum in 1872 that showed <a href="http://en.wikipedia.org/wiki/Absorption_line" target="_blank">absorption lines</a>.</p>
<p>Read more about <a href="http://en.wikipedia.org/wiki/Henry_Draper" target="_blank">Henry Draper here</a>.</p>
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		<title>First Notes</title>
		<link>http://www.90mm.us/2009/08/25/first-notes/</link>
		<comments>http://www.90mm.us/2009/08/25/first-notes/#comments</comments>
		<pubDate>Wed, 26 Aug 2009 00:32:18 +0000</pubDate>
		<dc:creator>Dan</dc:creator>
				<category><![CDATA[Astrophotography]]></category>
		<category><![CDATA[Astronomy]]></category>
		<category><![CDATA[DSLR]]></category>

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		<description><![CDATA[  It&#8217;s been hot and hazy for the past week and the skies are murky at best. After a long hiatuses, I&#8217;m anxious to get back out under the stars. Since the skies are a bit hazy, I stroll outside around 10:00pm local time and behold, the skies are a little better than I thought. Since [...]]]></description>
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<p>It&#8217;s been hot and hazy for the past week and the skies are murky at best. After a long hiatuses, I&#8217;m anxious to get back out under the stars. Since the skies are a bit hazy, I stroll outside around 10:00pm local time and behold, the skies are a little better than I thought.</p>
<p>Since photography is another passion of mine, I always wanted to try shooting the night sky. I don&#8217;t know why I haven&#8217;t tried it before, just busy I guess. So, I grab my DSLR and tripod and make my first attempt at astrophotography.</p>
<p>Not knowing what to expect, I setup my camera in manual mode, a Pentax*ist DS (a 6.1 megapixel camera) with an smc Pentax-DA 18 &#8211; 55mm lens set at 24 mm;  f/4.0; ISO 3200; tungsten white balance.</p>
<div id="attachment_7" class="wp-caption alignleft" style="width: 410px"><img class="size-full wp-image-7" title="First test-image 1" src="http://www.90mm.us/wp-content/uploads/2009/08/First_test_image_1.jpg" alt="First test - image 1" width="400" height="267" /><p class="wp-caption-text">First test - image 1</p></div>
<div class="mceTemp"> </div>
<div class="mceTemp">And this is what I got. It&#8217;s just a random shot of the night sky here in Harleysville PA where I live. The exposure for this shot is 8.9 seconds at f/4.0, 24mm, ISO 3200.</div>
<div class="mceTemp">You can view this and four additional images in the <a href="http://www.90mm.us/?page_id=28">First Attempt</a> gallery.</div>
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