Observer: Tom Corstjens
Object Name: IC 5146 – Cocoon Nebula – Caldwell 19
Object Type: H-II Emission nebula
Location: Zillebeke, Belgium (during Starnights event – see www.starnights.be)
Date: 23 August 2009 – 0h25 UT
Media: graphite pencil on white paper, scanned & digital negative.
Equipment: Trusstube Dobson 220mm F/5.9
Eyepiece: Televue Plössl 17mm
Filter: Lumicon UHC 1.25 inch
Seeing / transparency: good
Very diffuze emission nebula, situated around 2 bright stars with most detail on north side. Different dark structures visible with long use of off-axis observation technique.
A nice starcluster can be found north of the Cocoon nebula, at low power the dark nebula Barnard 168 is very obvious!
Other sketches from the author can be found at: www.deepskylog.org (select language “Nederlands”, since my comments are in Dutch)
Enjoy & best wishes