Dolphin Head Nebula

Dolphin Head Nebula

Catalogued as Sh2-308, AKA the Dolphin Head Nebula, it lies some 5,200 light-years away toward the constellation of Canis Major.

Back to try Heq5 pro belt since I upgraded by myself last August.

The guiding is as good as Sharpstar mark iii Harmonic Drive Mounts , sometimes results even better.

Camera settings

Temp:0℃ and -10℃

Gain 100

Exposure time:300 seconds x 250 shoots

Bortle Scale : 6 in Adelaide South Australia

Main Camera: ZWO 2600MC - Oil Leaking version

Guide Camera : ZWO 120MC

Mount: Skywatcher HEQ5PRO

Telescope: ASKAR 107PHQ

Filter: ASKAR 3nm Dualband filter

ZWO Air-Pro

海豚星云

直径大约60光年的 海豚星云,天体编号是SH2-308,距离我们只有5200光年,位在大犬座方向。

海豚的眼睛是一颗量是太阳的20倍以上的沃夫-瑞叶型恒星,这是一种前超新星阶段,说人话就是,这颗星星在宇宙的维度上快要爆炸了,但是在人类的纬度上还将永久存在。

其实我们现在看到的这个图像,是5200年前人类估计还在刀耕火种时候的样子,这也许就是天文摄影的奇妙。

很多人问我为什么喜欢天文摄影,其实在夜里,我们看得比白天更远。白天只能看到一万五千亿公里外的太阳,夜里却能看到百万光年外的星辰。