ldn 673 dark nebula

673 alpa aquila aquilla artistic astronomy astrophotographer astrophotography centre clouds cocoon color comet complex constellation constellations cygnus cynus dark dense distant done dust eastern exploration far gas god hobby hydrogen iii image interest ionized ions lanes large lbn ldn ldn673 light located mass milky molecular nebula nebular ophiuchus oxygen palette pallete part reflector refractor region remanent remnant rift science serpens space stars stellar summer supernova swan telescope that the trough universe veil view way widefield