NGC 7331 - Stephansquintett

Hallo Leute!

Ich hatte zunächst große Schwierigkeiten mit der Bearbeitung, erreichte allerdings nach dem 4. "Anlauf" ein passables Resultat.
Ich sammelte die Frames in der Nacht vom 8. auf den 9. September, hatte also (leider) mit abnehmendem Halbmond zu kämpfen, der schon um etwa 1 beinahe den gesamten Himmel ausleuchtete. Probleme hatte ich durch den Lichteinfall des Halbmondes in den Sucher auch mit dem Guiding, den Gradienten konnte ich einigermaßen gut korrigieren (Dynamic Background Extraction).

Zum Objekt:

Die Galaxie NGC 7331 wurde am 5. September 1784 von dem deutsch-britischen Astronomen Wilhelm Herschel entdeckt und liegt in einer Entfernung von etwa 40 Millionen Lichtjahren. Sie ähnelt in vielen Bereichen unserer eigenen Galaxie, weshalb sie auch "MIlky Way's Twin" genannt wird.

Das Stephans Quintett ist eine Gruppe von fünf Galaxien im Sternbild Pegasus, die am 22. September 1877 von dem französischen Astronom Édouard Jean-Marie Stephan entdeckt wurde.
Die Galaxien NGC 7317 bis NGC 7319 bilden ein räumlich enges, wechselwirkendes System in etwa 300 Millionen Lichtjahren Entfernung. Aufgrund der gegenseitigen Gravitationswirkung sind die Spiralarme der Galaxien unregelmäßig verformt.

Diese Datei bewerten - derzeitige Bewertung : 0/5 mit 1 Stimme(n)

Datei-Information
Dateiname:	NGC 7331 - Stephansquintett.jpg
Name des Albums:	simon / 8"/f4 Newton Teleskop
Bewertung (1 Stimmen):
Schlüsselwörter:	Stephansquintett, / NGC / 7331, / Stephan, / Quintett
Fotograf:	Simon Großlercher
Teleskop:	8" f/4 Newton EQ-6 Skyscan Lacerta MGEN2 EOS 550D unmodifiziert bearbeitet mit PixInsight
Aufnahmedetails:	45x5min Flats, Darks, Bias
Uhrzeit/Ort:	8.9.2012
Dateigröße:	953 KB
Hinzugefügt am:	11. September 2012
Abmessungen:	1926 x 1258 Pixel
Angezeigt:	559 mal
URL:	http://www.astrostammtisch.com/galerie/displayimage.php?pid=1346
Favoriten:	zu Favoriten hinzufügen

Debug-Info

Debug-Ausgabe: anzeigen / verbergen

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==========================

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NGC 7331 - Stephansquintett

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