Amateur Astrophotographie Landos France

Cocoon Nebula

Cocoon with 12″ ACF

 

Optics/mount : 12″ACF 2.7m AP-Reduzer Alt-5
Camera/filters: Atik 11002 Astrodon LRGB HA5nm
Exposure: 12×600 Lum, 8×400 RGB 2x2bin

Cocoon Widefield with Epsilon 180 f2,7

Cocoon
Optics/mount: 180 Epsilon f2,8 Takahashi  Mount Ci700 Celestron
Camera/filters:QHY 12
exposure: 19×600 sec

IC 5146 (also Caldwell 19, Sh 2-125, and the Cocoon Nebula) is a reflection/emissionnebula and Caldwell object in the constellation Cygnus. IC 5146 refers specifically to the star cluster and Sh2-125 to the nebula. It shines at magnitude +10.0/+9.3/+7.2Its celestial coordinates are RA 21h 53.5m, dec+47° 16′. It is located near the naked-eye star Pi Cygni, the open cluster NGC 7209 in Lacerta, and the bright open cluster M39. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago; the nebula is about 12 arcmins across, which is equivalent to a span of 15 light years. When viewing IC 5146, dark nebula Barnard 168 (B168) is an inseparable part of the experience, forming a dark lane that surrounds the cluster and projects westward forming the appearance of a trail behind the Cocoon

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