Thor’s Helmet Nebula

大犬座NGC2359星云俗称“雷神的头盔”。它距离 地球1.5光年，寿命10万年左右。

这个雷神的头盔十分复杂，有一对闪电般的犄角，两旁还有一对护耳、脖套、头缨,有一大堆蓝色的巨泡，巨泡下面有成团的 尘埃云，尘埃云埋葬了附近的恒星。

这个头盔的大小约为30光年。

《三国演义》周瑜大都督的头盔就是仿照“雷神的头盔”设计的。

15000 light years away,NGC 2359 (also known as Thor's Helmet) is an emission nebula in the constellation Canis Major.

Two nights shooting at -10℃ and Two nights at 0 ℃ for the hot summer.

After blink, setup group by temp 200 fits stack in WBPP after 3 hours waiting. 

The helmet is too small for my 107PHQ, crop a lot and exterminate the stars , adjust a lot at Pi and Photoshop.

Camera settings

Temp:0℃ and -10℃

Gain 100 

Exposure time:300 sec x 200

Bortle Scale : 6  in Adelaide South Australia

Main Camera: ZWO 2600MC - Oil Leaking version

Guide Camera : ZWO 120MC 

Mount: Sharpstar Mark iii

Telescope: ASKAR 107PHQ 

Filter: Optolong L-ultimate 3nm 

ZWO Air-Pro