IC 5146 --- The Cocoon Nebula
From the author of Sizing Up The Universe
Hα images from July 9, 2009 and Sept 5, 2016
Hα + RGB
20:22 EDT, Sept 5, 2016
Trius SX-694 on 10" RC
Hα = 108 mins.
R = G = 5 min, B = 48 min.
Plus images from July 9, 2009 (see below).
Hα
L=Hα,
R=Hα, G=OIII, B=OIII
23:12 EDT, July 9, 2009
Starlight Express SXV-H9 on 10" RC
Hα = 130 mins,
OIII = 20 mins (in 10 min guided increments),
No image enhancement. Seeing: FWHM = 1.3 arcseconds. Full Moon!