Combination of 20, 3 minute images using an H-alpha filter.
SBIG ST8-XE CCD. 5" f/5 refractor at prime focus.
RCW 102 is a fairly large but faint emission nebula in Norma, about 1 degree south of another faint nebula, RCW 103 and in the same field as the unusual planetary nebula, PK 331 -1.1, also known as the "Ant Nebula". This object is the small, bright patch just to the right of RCW 102.