[AZ-Observing] Re: IC 5146 - The Cocoon Nebula
- From: Chris Schur <comets133@xxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Thu, 1 Sep 2011 10:24:53 -0700 (PDT)
Bernard, awsome image! the surrounding dark nebulosity appears to really light
up here.
Clear Skies,
Chris
Schur's Web Portal: http://www.schursastrophotography.com
--- On Wed, 8/31/11, Bernard Miller <bgmiller011@xxxxxxx> wrote:
From: Bernard Miller <bgmiller011@xxxxxxx>
Subject: [AZ-Observing] IC 5146 - The Cocoon Nebula
To: az-observing@xxxxxxxxxxxxx
Date: Wednesday, August 31, 2011, 10:42 PM
Hi,
I finally got a break in the clouds and was able to nab a couple of
pictures. The link below shows IC 5146, also known as the Cocoon Nebula. It
is both a reflection and an emission nebula about 3300 light years away in
the constellation of Cygnus. A reflection nebula reflects the light of
nearby stars, while an emission nebula is formed when light from nearby
stars ionizes the gas and makes the nebula glow. This nebula does a little
of both. The IC 5146 actually refers to the star cluster at the center of
the nebula while Sh2-125 is the actual nebula. The nebula is about 15 light
years in diameter. You can also see the dark nebula Barnard 163 which
surrounds the nebula and forms a dark trailing cloud extending to the west
of the nebula (to the right in the picture.
http://www.azstarman.net/IC5146_CROP.htm
http://www.azstarman.net/IC5146.htm
Bernard
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