~3 hours total integration (500 × 20s). Captured with a SeeStar S30 in Alt-Az mode under Bortle 7 skies and a full Moon. AI denoise applied in the SeeStar app. No external stacking yet—looking to try stacking and post-processing in dedicated software next.
Target is the Heart Nebula (IC 1805), a large H II region in Cassiopeia roughly 7,500 light-years away and about 150 light-years across. Its emission is dominated by ionized hydrogen energized by massive young stars in the central cluster Melotte 15, whose radiation and stellar winds shape the surrounding gas and dust seen in the structure.
by RhinoBiker