IC 5146 (Cocoon Nebula) from my own backyard

This is an object I imaged three times over the years, from my own backyard and during holidays.

IC 5146 is a reflection and emission nebula in the constellation Cygnus..

The last time I imaged this nebula in Hα in 2015 from my own backyard. For the following image, I have combined this Hα data with the RGB data from 2010. Data calibration, registration and the final processing was done with PixInsight. The result was as follows:

---

The images were taken with the following equipment:

• Date 2015
• Location: Krefeld, Germany
• Telescope: 10″ Newton ohne Namen
• Focal length [mm]: 1000
• Focal ratio: 3.9
• Mount: Losmandy G11
• Camera: Moravian FW 8300
• Filter: Hα
• Exposure time [min]: 108
• Resolution: 1.11″/px

---

The second time I imaged this nebula in 2010 during a holiday in Banon, France.

Data calibration and registration was done with DeepSkyStacker, the final processing was done with PixInsight. The result was as follows:

---

The images were taken with the following equipment:

• Date 2010
• Location: Banon, France
• Telescope: 8″ GSO Newton
• Focal length [mm]: 200
• Focal ratio: 4
• Mount: Skywatcher NEQ6
• Camera: Canon 500 Da
• Filter: OSC
• Exposure time [min]: 110
• Resolution: 3.11″/px

---

The first time I imaged this nebula during a holiday at the Emberger Alm, Austria in 2007. Data calibration and registration was done with DeepSkyStacker and the final processing was done with PixInsight. The result was as follows:

---

The images were taken with the following equipment:

• Date 2007
• Location: Emberger Alm, Austria
• Telescope: Pentax 75
• Focal length [mm]: 500
• Focal ratio: 6.7
• Mount: Vixen GP-DX
• Camera: Canon 300 Da
• Filter: OSC
• Exposure time [min]: 38
• Resolution: 3.73″/px

---