NGC3729, NGC3718 & Hickson 56 Galaxy Group
NGC3729、NGC3718、Hickson 56 星系群
NGC3729、NGC3718、Hickson 56 (Arp 322)星系群
http://www.astrocafe.hk/viewtopic.php?f=17&t=4103&p=28081#p28081
Officina Stellare 500 RiFast (1900 f3.8) 摄星镜
FLI Proline 16803 相机
Astrodon LRBGHa 滤镜
Paramount ME
Taken from my robotic observatory in Tibet (摄于我的西藏遥控天文台)
50% 出图
