Melotte-15 is the star cluster at the heart of the Heart Nebula:
Ha: 28x1200s binned 1x1
SII: 15x1200s binned 1x1
OIII: 15x1200s binned 1x1
1160 minutes total exposure - 19.33 hours
Imaged October, 5, 6, 7, 9, 10, 11, 12 in Danville CA with an SBIG ST-10XME on a C9.25 at f/6.3 (1481mm)