17 lights at 600sec, ISO400, UHC 2″ filter by Optolong: 14/12/2020 Astrobin: https://www.astrobin.com/z8ubnf/ Astrometry: http://nova.astrometry.net/user_images/4229245#annotated
View More NGC2099 (M73) IC439羞龍天文摄影 Xiulong Astrophotography
Xiulong Tianwen Sheying – Astrophotography by 羞龍Xiulong Stefano Zamblera