NGC 6357 War & Peace Nebula
NGC 6357 is a massive emission nebula that lies in the constellation of Scorpius. It holds a complex tapestry of gas, dark dust, stars still forming, and newly born stars. The intricate patterns are caused by complex interactions between interstellar winds, radiation pressures, magnetic fields, and gravity.
The small open star cluster Pismis 24 lies in the core of NGC 6357 in Scorpius, about 8,000 light-years away from Earth. Some of the stars in this cluster are extremely massive and emit intense ultraviolet radiation.
The brightest object in the picture is designated Pismis 24-1. It was once thought to weigh as much as 200 to 300 solar masses. This would not only have made it by far the most massive known star in the galaxy, but would have put it considerably above the currently believed upper mass limit of about 150 solar masses for individual stars.
Total Imaging Time: 11.8 hours
Camera: QHY 163M
Filter: Antlia 3.5nm Narrowband filters
Lens/Scope: William Optics Zenithstar 61
Mount: Explore Scientific iEXOS-100
Acquired in APT, Stacked and calibrated in DeepSkyStacker, Post processed in Pixinsight and Photoshop