mel-15 in the heart nebula ic1805 narrowband

1000mm alpha apollo arm arms astro astronomy astrophoto astrophotography billion billions black bright camera casseopia cassimaged cassioimaged cassiopeia central contrast core cosmos crisp deep detail detailed dust filter focal focus full gas hdr heart high hydrogen ic1805 imaged iorbit lanes length light located mel15 milkyway million millions narrowband nebula oiii part perseus prime resolution sharp sii sky skywatcher solar space spiral stacked stars supernova system telescope tranquility trillions uhd universe year