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Cocoon Nebula in Cygnus

Cocoon Nebula in Cygnus
(Mouse Over to see more.)

 
Object ID: IC 5146

APOD  -  "The Cocoon Nebula, cataloged as IC 5146, is a strikingly beautiful nebula located about 4,000 light years away toward the constellation of Cygnus. Inside the Cocoon is a newly developing open cluster of stars. Like other stellar nurseries, the Cocoon Nebula is, at the same time, an emission nebula, a reflection nebula, and an absorption nebula. Speculation based on recent measurements holds that the massive star in the center of the above image opened a hole in an existing molecular cloud through which much of the glowing material flows. The same star, which formed about 100,000 years ago, now provides the energy source for much of the emitted and reflected light from this nebula."

Nilesh shot Halpha data on 1 Nov, looking at good data we decided to build Tri-Color Narrowband Image. But then New Rainy season of India Started and we had to wait till end of November till we get open window.
On 28th Nov Nilesh started gathering OIII data and realized there is not much of OIII data, Nebula is mostly Ha only, so he took some Blue data. From that we assembled RGB. Not Much processing than Black Point adjustment and RGB Assembly.

Mouse-Over to see Only Halpha Version.


Optics: Celestron C9.25" + 0.4x Reducer
Mount: Losmandy G11
Camera: Starlight Express HX916
Guiding: Autoguided with EXT90 + DSI Pro
Exposure: Halpha(Red) : 4min x 11 : 44min
OIII(Green) : 2min x 7 : 14min
Blue(Blue) : 2min x 5 : 10min
Total : 1hrs 8mins
Aquired On: 1 November 2010 & 28 November 2010
Location: Baner, Pune, Maharashtra, India
Image Processing: -Dark Subtracted & Combined in IRIS
-LRGB Assembled in PS
-Black Point adjusted.
-Noise Reduction