Crescent nebula(NGC 6888) & Soap bubble- ZWO 533mc Pro

 

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 William 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^{[citation needed]} 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. 

 

 

Telescope : SW Esprit 100ED

Mount : SW EQ6-ri 

Camera : ZWO 533 mc pro

Guiding : 8x50 SW finder with QHY 5IIL

Filters:   Total exposure time : 9 hours with differnts exposures(300, 600sec.) , L-enchance 1.25.

Programs I have used : Nina 2.2 _ PixInsight 1.8.9-1

Location: Grammatiko, Attiki

M 27 Dumbbell Nebula--First light with ZWO 533mc pro--

 

This new version is 6 hours & 45 minutes with Optolong L-Enhance filter from bortle 5 sky.

 

Old version with Baader UV-IRcut filter and 4 hours & 3 minutes, same from bortle 5 sky.

The Dumbbell Nebula (also known as the Apple Core Nebula, Messier 27, and NGC 6853) is a planetary nebula (nebulosity surrounding a white dwarf) in the constellation Vulpecula, at a distance of about 1360 light-years. It was the first such nebula to be discovered, by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and diameter of about 8 arcminutes, it is easily visible in binoculars and is a popular observing target in amateur telescopes. 

 

Telescope : SW Esprit 100ED

Mount : Skywatcher EQ6-ri 

Camera : ZWO 533 mc pro

Guiding :8x50 finder with QHY 5IIL

Filters:   Total exposure time : 81x180 (4hours & 3min) with flat & flatdarks but without Darks .

Programs I have used : Nina 2.2 _ PixInsight 1.8.9-1

Location: Grammatiko, Attiki