IC 5146 is an open cluster linked to a diffuse nebula visible in the constellation of the Swan.
It is located 3.5 degrees east of M39, in the northern part of the constellation.
It is a small cluster surrounded by a very collected nebula (in the form of a cocoon, just called Cocoon Nebula), connected in turn to a system of obscure nebulosity, known by the initials B 168, which extends for about 2 degrees in the direction of M39.
This complex of obscure nebulosities is also very evident with binoculars because it obscures a rich stellar field. This set of nebulae would have a distance from the Sun of about 3300 light years.
Optic Tecnosky Apo Refractor 115 - 800mm f/6.9
Mount Losmandy G11 with Ovision worm and FS2
Camera Canon Eos 400D Baader modded
Guiding system Skywatcher ED80 with Lodestar
Exposure details 13x480" ISO 800
Total integration 2.5h
Acquisition DSLR Shutter, PHD2
Processing Iris, Photoshop CS5
Location Pian dell'Armà (Pavia, Italy)
Date 17 August 2012