Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  HD191396  ·  HD191397  ·  HD191424  ·  HD191472  ·  HD191473  ·  HD191703  ·  HD192003  ·  HD192020  ·  HD192041  ·  HD192078  ·  HD192079  ·  HD192102  ·  HD192123  ·  HD192163  ·  HD192182  ·  HD192303  ·  HD192361  ·  HD192422  ·  HD192443  ·  HD192444  ·  HD192536  ·  HD192639  ·  HD192744  ·  HD192745  ·  HD192766  ·  HD192934  ·  HD228101  ·  HD228114  ·  HD228355  ·  And 12 more.
The Crescent Nebula and Soap Bubble Nebula HOO, Justin Worden
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The Crescent Nebula and Soap Bubble Nebula HOO

The Crescent Nebula and Soap Bubble Nebula HOO, Justin Worden
Powered byPixInsight

The Crescent Nebula and Soap Bubble Nebula HOO

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Description

I aquired the data for this image of the Crescent Nebula from two locations over two seperate years.  I aquired data in 2021 and 2022 from my back yard in New York, and I aquired additional data while on vacation in Naragansett, Rhode Island in 2022.    Captured with NINA, stacked and calibrated with Astro Pixel Processor, and processed in Pixinsight.

From Wiki:The Crescent Nebula (also known as NGC 6888Caldwell 27Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William Herschel in 1792.[2] It is formed by the fast stellar wind from the Wolf-Rayet starWR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000[3] to 400,000[[i]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.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 favorable 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".
https://en.wikipedia.org/wiki/Crescent_Nebula

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The Crescent Nebula and Soap Bubble Nebula HOO, Justin Worden

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