Cocoon Nebula. LRGB.

Note
My goal was to have a lot of data to work with and add Ha-data in the end. I have the Ha-data but I find that the Ha-regions take over the nebula to much with some loss of detail as a consequence. Later on I might also do a Ha-LRGB image but for now I will let the image rest. I can also say that converting the final result from PSD to JPEG does affect details, color separation and the clouds transparancy rather bad, even at maximum quality. Below is a link to a TIFF-file that can be downloaded.
Most people do say it is easy to do image processing with a lot of data but I tend to disagree a bit. If one is not used to work with a lot of data it is difficult to have referencies to follow. This is typical for my final result which I am a bit ambivalent to. Specifically how the stars turned out.



Third image with Lum: 82x5 min, RGB 5x5 min.


Second image with Lum: 40x5 min, RGB 5x5 min.


First image with LRGB 5x5 min.



ABOUT
IC 5146 (also Caldwell 19, Sh 2-125, and the Cocoon Nebula) is a reflection/emission nebula 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/+7.2. Its 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.
Processing
CCD Stack and CS5

Exposure
Lum: 82x5 min
RGB: 25x5 min

Calibration
Darks, bias and flats.

Filters
Astrodon LRGB E-series

Cooling temp
-20´ C

Mean FWHM
3.70"

Date
15th of November
6th of October 2012
19th of September 2012
17th of September 2012


Location
Krigslida, Stockholm, Sweden.
N59 06 52.4    E 18 03 54.5

Image aqusition
CCD AutoPilot 5

Scope control
Sky X Pro Native drv, and Maxim DL with Astro-Physics V2 drv.

Telescope
TEC APO 140 with FF
Focal length: 1010
Focal ratio: 7,2

Mount
Astro-Physics Mach 1 GTO

Camera
QSI 583 WSG-8

Guiding
OAG guiding with Lodestar Guider

Focus system
Starlight Micro Touch and Focus MAX.


Inverted B/W image