NGC6888 Crescent Nebula (Dennis Kaiser)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888

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NGC6888 Crescent Nebula

Revision title: Final version

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NGC6888 Crescent Nebula

Revision title: Final version

NGC 6888 ist ein Emissionsnebel im Sternbild Schwan, der 4700 Lichtjahre von der Erde entfernt ist. Er wird auch Crescent Nebel, Sichelnebel oder Mondsichelnebel genannt. NGC 6888 wird von einem sogenannten Wolf-Rayet-Stern mit der Bezeichnung WR 136 beleuchtet.

Nebenbei handelt es sich bei diesem Exemplar um einen der hellsten W-R-Nebel. Ein Merkmal von W-R-Sternen sind ihre extrem starken Sternwinde. Die von ihnen in den Raum abgeblasene Materie wird von ihrem energiereichen Licht zum Leuchten angeregt und erscheint uns in einigen Fällen als Emissionsnebel. Das Leuchten des Nebels wird hier durch zwei unabhängig auftretende Ionisationsvorgänge ausgelöst. Die Hauptarbeit leistet hier der Zentralstern selbst, der durch seine hohen Temperaturen den Nebel besonders stark ionisiert und vor allem im OIII Bereich so zum Leuchten bringt. Des weiteren kollidieren die starken Sternwinde mit dichten interstellaren Medium, was eine Stoßfront zur Folge hat, an der sich das Material aufheizt und ebenfalls ionisiert.

Bei der Aufnahme handelt es sich um Daten die mit dem L-Extreme Filter aufgenommen wurden und dazu noch eine Kombination aus RGB Sternen, die eingeblendet wurden.

Anfangs wollte ich das neue Script von Bill Blanshan ausprobieren das sich Narrowband Normalization nennt.

In den YouTube Videos sieht das ganze super aus aber bin gar nicht warm geworden damit. Vielleicht liegt es an der Datei auf die man das Script anwendet, muss vorher eventuell anders bearbeitet worden sein.

Wenn jemand Tipps dazu hat dann bitte gerne ein Kommentar dazu da lassen.

Infos zum Objekt aus Wiki und Spaceimages de

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Basic success
Started	...
Astrometry.net job	8179668
PixInsight job	n/a
PixInsight queue size	n/a
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NGC6888 Crescent Nebula

Revision title: Final version

NGC6888 Crescent Nebula

Revision title: Final version

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Image Index:

Contribution Index (beta):

NGC6888 Crescent Nebula

Revision title: Final version

NGC6888 Crescent Nebula

Revision title: Final version

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