IC5146 – Cocoon Nebula – 2013-10-26 – v1

IC5146 - Cocoon Nebula - 2013-10-26 - v1

IC5146 – Cocoon Nebula – 2013-10-26 – v1

The cocoon nebula
IC 5146, Caldwell 19, Sh 2-125
Barnard 168, B168, dark nebula

Acquired: 2013-10-26
Version: 1

Emmission/reflection nebula with dark nebula
Distance: 3,300ly
Size: 12′
Magnitude” 7.2

The cocoon nebula is an emmission/reflection nebula. The red (pink) colour is caused by ionaized hydrogen gas (HA). The bluish parts (which gives the overall nebula a pink colour) are caused by light from bright blue stars reflect on the dust in the area. There is also a open cluster of mag 9.5 stars near the centre.

The “dark nebula” that surrounds the emission nebula is an area of dense interstellar matter (dust) that blocks the light from stars behind it.

Scope: HD11
Camera: Canon T2i – astrodon filter
23x10min (3h 50m) at ISO1600
Guided with Celestron OAG, Chameleon and Metaguide

captured with ImagesPlus
stacked with DSS
processes with PixInsight
Cropped and resampled at 50%