IC5147 Cocoon Nebula
The active star formation occurring inside the cloud leads to the formation of a young open star cluster called Collinder 470, with an apparent brightness of 7.2 mag and an estimated age of a few hundred thousand years.' role="button">
Michael Geissel
Information
IC5147 Cocoon NebulaIC5147 Cocoon NebulaIC5147 Kokon-Nebel
After a long time, we were finally able to use the clear sky for three hours until moonrise.IC5146 Cocoon Nebula with 36x300 sec exposure time.
The nebula has an apparent size of about 10 arcminutes and is approximately 3000 light-years from Earth; its physical size is therefore about 10 light-years.
The nebula is a star-forming region with ionized atomic hydrogen and contains emitting, reflecting, and absorbing components.
From Earth's perspective, IC 5146 is located at the eastern end of the elongated dark cloud Barnard 168 and, together with it, is part of an extensive molecular cloud. Slightly to the west lies the reflection nebula vdB 147, which likely also belongs to the complex.
The active star formation occurring inside the cloud leads to the formation of a young open star cluster called Collinder 470, with an apparent brightness of 7.2 mag and an estimated age of a few hundred thousand years.After a long time, we were finally able to use the clear sky for three hours until moonrise.
IC5146 Cocoon Nebula with 36x300 sec exposure time.
The nebula has an apparent size of about 10 arcminutes and is approximately 3000 light-years from Earth; its physical size is therefore about 10 light-years.
The nebula is a star-forming region with ionized atomic hydrogen and contains emitting, reflecting, and absorbing components.
From Earth's perspective, IC 5146 is located at the eastern end of the elongated dark cloud Barnard 168 and, together with it, is part of an extensive molecular cloud. Slightly to the west lies the reflection nebula vdB 147, which likely also belongs to the complex.
The active star formation occurring inside the cloud leads to the formation of a young open star cluster called Collinder 470, with an apparent brightness of 7.2 mag and an estimated age of a few hundred thousand years.Nach langer Zeit konnten wir mal wieder den klaren Himmel für drei Stunden bis zum Mondaufgang nutzen.
IC5146 Cocoonnebel mit 36x300 sec Belichtungszeit.
Der Nebel hat eine scheinbare Ausdehnung von rund 10 Bogenminuten und ist etwa 3000 Lichtjahre von der Erde entfernt; seine physische Ausdehnung beträgt damit ca. 10 Lichtjahre.
Der Nebel ist ein Sternentstehungsgebiet mit ionisiertem atomarem Wasserstoff und hat sowohl emittierende, reflektierende als auch absorbierende Bestandteile.
IC 5146 befindet sich von der Erde aus gesehen am östlichen Ende der länglichen Dunkelwolke Barnard 168 und ist mit dieser zusammen Teil einer ausgedehnten Molekülwolke. Etwas westlich liegt der Reflexionsnebel von vdB 147, der vermutlich auch zum Komplex gehört.
Die im Innern der Wolke ablaufende, rege Sternentstehung führt zur Bildung eines jungen offenen Sternhaufens mit der Bezeichnung Collinder 470, einer scheinbaren Helligkeit von 7,2 mag und einem geschätzten Alter von wenigen hunderttausend