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	<title>M42 &#8211; PekDar &#8211; Inżynieria Astrofotografii</title>
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	<title>M42 &#8211; PekDar &#8211; Inżynieria Astrofotografii</title>
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		<title>M42 (Mgławica Oriona): Od ciemnego pyłu do oślepiającego Trapezu</title>
		<link>https://astrophotography.pekdar.net/m42-mglawica-oriona-trapez-hdr/</link>
		
		<dc:creator><![CDATA[PekDar]]></dc:creator>
		<pubDate>Sat, 12 Sep 2020 22:05:14 +0000</pubDate>
				<category><![CDATA[Astrofotografia]]></category>
		<category><![CDATA[H-alpha]]></category>
		<category><![CDATA[HDR]]></category>
		<category><![CDATA[M42]]></category>
		<category><![CDATA[Mgławica Oriona]]></category>
		<category><![CDATA[Pył międzygwiezdny]]></category>
		<category><![CDATA[Trapez]]></category>
		<guid isPermaLink="false">https://astrophotography.pekdar.net/?p=3736</guid>

					<description><![CDATA[Studium Mgławicy Oriona (M42) na podstawie dwóch ujęć. Analiza głębokich struktur pyłowych w kontraście do jasnego jądra (Gromada Trapez). Omówienie techniki HDR i różnic w detekcji wodoru (H-alpha).]]></description>
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									<h2>M42 Mgławica Oriona</h2>
<p data-path-to-node="18"><b>Najbliższy żłobek</b> M42, czyli Wielka Mgławica w Orionie, to niekwestionowana królowa zimowego nieba. Położona zaledwie <b>1344 lata świetlne</b> od Ziemi, jest najbliższym nam obszarem masowego formowania się gwiazd. Ze względu na swoją bliskość i jasność (widoczna gołym okiem), pozwala na szczegółową analizę procesów niszczenia i tworzenia materii, które w innych galaktykach są dla nas niewidoczne.</p>
<p data-path-to-node="19">Artykuł ten prezentuje dwa różne podejścia do tego samego obiektu, ukazujące jego złożoną naturę: otaczające go ciemne pyły oraz energetyczne serce.</p>
<h3>Płaszcz z pyłu (Struktury Zewnętrzne)</h3>
<p data-path-to-node="21">Patrząc na głębsze partie zdjęcia, widzimy, że M42 nie jest zawieszona w próżni. Jest częścią gigantycznego <b>Obłoku Molekularnego w Orionie (OMC-1)</b>.</p>
<ul data-path-to-node="22">
<li>
<p data-path-to-node="22,0,0"><b>Ciemne mgławice:</b> Szare, &#8222;brudne&#8221; struktury okalające jasne centrum to gęsty pył międzygwiezdny. To materiał budulcowy, który jeszcze nie został zjonizowany przez gwiazdy.</p>
</li>
<li>
<p data-path-to-node="22,1,0"><b>Kontekst:</b> Widać tu dynamikę walki światła z materią. Promieniowanie z centrum &#8222;wypycha&#8221; i rzeźbi te obłoki, tworząc fale uderzeniowe w ośrodku.</p>
</li>
</ul>
<p style="text-align: center;"> <div id="wppa-container-wrapper-1" class="aligncenter wppa-container-wrapper " style="width:100%;clear:both;display:block;margin-left:auto;margin-right:auto;padding:0;position:relative;"><div id="wppa-container-1" style="width:100%;" class="wppa-container aligncenter wp-caption"><div style="font-size:0;line-height:0"><a data-id="ZwswsAPwfAsx" href="https://astrophotography.pekdar.net/wp-content/uploads/wppa-source/album-7/M42-OrionNebula-Canon6D.jpg?ver=3" data-lbtitle="M42 - Orion Nebula / Mgławica w Orionie&lt;br&gt; M42 - Orion Nebula / Mgławica w Orionie – Oct. 2019 © Dariusz Krzempek " data-rel="wppa" target="_self" class="thumb-img" id="a-288-1" data-alt="M42 - Orion Nebula / Mgławica w Orionie" style="cursor:wait;" onclick="return false;"><img fetchpriority="high" decoding="async" id="ph-288-1" style="width:100%;margin:0;height:auto;padding:0;border:none;" width="3666" height="2400" src="https://astrophotography.pekdar.net/wp-content/uploads/wppa/thumbs/288.jpg?ver=85" alt="M42 - Orion Nebula / Mgławica w Orionie" class="size-medium wppa-sphoto"></a></div><div class="wp-caption-text"></div><svg id="wppa-ajax-spin-1" class="wppa-ajax-spin uil-default" width="120px" height="120px" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid" stroke="" style="width:120px; 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<p> </p>
<h3>Silnik Mgławicy i H-alpha</h3>
<p data-path-to-node="24">Drugie zdjęcie (+ kolejne) ujawniają zupełnie inną fizykę – <b>jonizację i jądro</b>.</p>
<ul data-path-to-node="25">
<li>
<p data-path-to-node="25,0,0"><b>Kolor czerwony:</b> Dominująca czerwień to sygnatura wodoru (linia H-alpha). Świadczy ona o wysokiej energii w tym rejonie.</p>
</li>
<li>
<p data-path-to-node="25,1,0"><b>Gromada Trapez (Theta-1 Orionis):</b> W samym centrum, często przepalanym na amatorskich zdjęciach, znajduje się gromada młodych, masywnych gwiazd – Trapez. To te cztery główne gwiazdy (A, B, C, D) są &#8222;silnikiem&#8221; całej mgławicy. Ich potężne promieniowanie UV oświetla gaz na dystansie setek lat świetlnych i wydrążyło widoczną &#8222;jaskinię&#8221; w centrum obłoku, którą widzimy na zdjęciu.</p>
</li>
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<p> </p>
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<p> </p>
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<h3>Wyzwanie Techniczne</h3>
<p><b> Dynamika Tonalna (HDR)</b> M42 jest jednym z najtrudniejszych obiektów do poprawnego naświetlenia ze względu na ekstremalną rozpiętość tonalną. Różnica jasności między jądrem (Trapezem) a zewnętrznymi pętlami pyłowymi jest tak duża, że matryca aparatu nie jest w stanie zarejestrować ich na jednej ekspozycji. Aby pokazać środek mgławicy (nieprzepaloną białą plamę) oraz słabe zewnętrzne welony, konieczne jest zastosowanie techniki <b>HDR (High Dynamic Range)</b> lub maskowania warstw, łącząc krótkie czasy naświetlania (dla jądra) z długimi (dla tła).</p>
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<p>Źródło: <a href="https://pl.wikipedia.org/wiki/Wielka_Mg%C5%82awica_w_Orionie" target="_blank" rel="noopener">https://pl.wikipedia.org/wiki/Wielka_Mg%C5%82awica_w_Orionie</a></p>
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<p><!-- wp:paragraph --></p>
<p>Zdjęcie pierwsze: Październik 2019 r.</p>
<p><!-- /wp:paragraph --></p>
<p><!-- wp:paragraph --></p>
<p><!-- /wp:paragraph --></p>
<p><!-- wp:paragraph --></p>
<p>Skład: <a href="https://astrophotography.pekdar.net/astro-pixel-processor-podstawy/" target="_blank" rel="noopener">APP</a> (13 klatek)</p>
<p><!-- /wp:paragraph --></p>
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<ul>
<li>Obróbka: Raw Therapee + GIMP v2.10 + dodatki (Linux)</li>
<li>Lights: 13 x 600[s], ISO-400;</li>
<li>Bias, Flats</li>
</ul>
<p>Zdjęcia kolejne:</p>
<ul>
<li>Skład: Astro Pixel Processor,</li>
<li>Obróbka: GIMP v2.10.14 + dodatki, RawTherapee 5.6,</li>
<li>Lights: 21 x 60[s] ISO 1600,</li>
<li>Flats: 20, ISO-1600,</li>
<li>Darks: 9, ISO-1600,</li>
<li>Bias: 20, ISO-1600</li>
</ul>
<p><!-- /wp:list --></p>								</div>
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