SH2-298 NGC2359 Thor's Helmet, version 2

 Posted: Feb 13th, 2026
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Technical Info
Telescope/Lens: Askar 71F
Camera: ZWO ASI533MC Pro
Mount: JUWEI 14
Guide Scope: Askar 32 f4
Guide Camera: ZWO ASI120MM Mini
Software: Siril, Lightroom, StarNet++
Accessories: CAA, EAF, EFW, ASIAIR MINI, Askar Reducer x 0.75, Gemini PowerBox
Exposure:
43 x 300" ISO/Gain: 100 - Optolong L-eXtreme
Orange, Bortle 6 zone:
 Samara, Russia
 Feb 5th, 2026
3 h 35 m
39
Resolution: 2637x1648 px
Scale: 3200 KB
Second version. This is not just a gas cloud, but a Wolf-Rayet bubble. At its center lies an extremely hot and massive star (WR 7), which is in the final stage of its evolution. It ejects a colossal amount of material in the form of a powerful "stellar wind," which collides with the surrounding interstellar gas and inflates this glowing bubble. In my case, the target reached a maximum altitude of only 23 degrees. I captured it over two consecutive nights during the brief window when it could be caught between light pollution and thermal convection from nearby houses.
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Comments

There are so many Wolf-Rayet stars out there. It was a shock for me to learn that the Crescent Nebula is one of them too.
Today, at 19:37 Reply

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