Hi Everyone... I hope you atr having a good day….
I was finally able to finish this image last night. The clouds moved out and the Moon was out of the way until 2:00 AM last night. I love this image and there is so much H-Alpha in this region of the sky.smile emoticon:-) I hope all of you like it.
Have a good day and clear skies.
The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by Friedrich Wilhelm Herschel in 1792. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures
It is a rather faint object located about 2 degrees SW of Sadr. For most telescopes it requires a UHC or OIII filter to see. Under favourable circumstances a telescope as small as 8 cm (with filter) can see its nebulosity. Larger telescopes (20 cm or more) reveal the crescent or a Euro sign shape which makes some to call it the "Euro sign nebula".
Camera: Canon EOS T2i/550D Modified And TEC Cooled At 5C
Scope: Takahashi FS-60Q At 600mm F10
Exposure: 6 Minutes Each
Number of Stacked Images: 76
Number of Dark Frames: 0
Number of Bias Frames: 0
Filters: Baader UV/IR cut filter
Mount: Takahashi EM-200 Temma 2
Guide Scope: Non
Stacking Software: DeepSkyStacker
Processing Software: Photoshop CS6 And Adobe Camera Raw
Shooting Date/Time 06/06/2017 01:29 AM
Shooting Date/Time 06/17/2017 12:01 AM