Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  LBN 203  ·  NGC 6888  ·  Sh2-105
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NGC 6888 - the O III shell, pete_xl
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NGC 6888 - the O III shell

Getting plate-solving status, please wait...
NGC 6888 - the O III shell, pete_xl
Powered byPixInsight

NGC 6888 - the O III shell

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Description

The image shows the shell of ionized light emitting OIII gas in the object NGC6888 (Crescent Nebula).

NGC 6888 is an accumulation of ionized gas in the constellation Cygnus that is driven away by the stellar wind of a hot Wolf-Rayet type star (WR136). The ionized gas emits red light in the hydrogen alpha wavelength. The central hydrogen alpha gas compex is wrapped by a wavefront of gas that contains oxygen molecules which emit green-blue light.

The image was composed from from picture taken with two cameras

ASI1600mmp:

Ha 38 x 300s @ gain 139

OIII 58 x 300s @ gain 139

ASI294mcp:

100 x 15s @ gain 125 (for the stars)

Telescope: 130/910 mm TS Photoline APO Triplet

PP: Channel combination in APP and PSCC2019

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NGC 6888 - the O III shell, pete_xl

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