NGC 7822 Emission Nebulae

NGC 7822

NGC 7822
NGC 7822

NGC 7822 is a huge star nursery in constellation Cepheus about 300 light years away. The glowing gas clouds are powered by one of the hottest stars in our neighborhood. Its surface temperature is about 45’000 degrees Kelvin and its luminosity outshines our sun by a factor of 100’000. This picture only shows the inner part of the cloud complex. The full object is by far too large for the field of view of my telescope.

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Sh 2-157 (Lobster Claw Nebula), NGC 7635 (Bubble Nebula), NGC 7538 (Northern Lagoon Nebula), NGC 7510 Emission Nebulae

Sh 2-157 (Lobster Claw Nebula), NGC 7635 (Bubble Nebula),…

Lobster Claw Nebula, Bubble Nebula, Northern Lagoon Nebula
Lobster Claw Nebula, Bubble Nebula, Northern Lagoon Nebula

Huge HII region in Cepheus and Cassiopeia. Massive stars illuminate surrounding gas clouds. Wolf-Rayet stars power the blueish central part of the Lobster Claw and a massive star blows up the bubble, which is nothing else but a shockwave generated by fast stellar winds. The open star cluster just on the top in the center has a funny form … like the tip of an arrow.

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NGC 6888 Emission Nebulae

NGC 6888

NGC 6888
NGC 6888

A gas nebula powered by a Wolf-Rayet star in the center. The star has ejected several times the mass of the sun into the surrounding gas remaining from the formation of the star only several million years ago. The star is more than 20 times as massive as the sun and has almost burned its fuel. In about a million years from now it will go supernova providing a spectacular firework.

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