The Coal Sack, next to the Southern Cross. Stack of eighteen 2.5 minute exposures, Canon 100mm/2.8macro USM lens at f/2.8, ISO 1250. Flat-fielded and dark-subtracted.
Thanks for sharing and inspiring us to take such kind of photos. Do you use some kind of auto-guiding system as such long duration shots will cause a lot of star trailing? I will highly appreciate your help on this.
