It might seem paradoxical but sometimes it is the absence of light that makes an astrophotography image interesting.  Such a feature is the so-called Aquila Rift, a vast, dark interstellar cloud that spans the constellations of Aquila (Eagle), Serpens Cauda and eastern Ophiuchus.  Towards the central section of the rift, about 600 million light-years from Earth, within the Aquila constellation and not far from the Summer Triangle’s Altair star, is Lynd’s Dark Nebula (LDN) 673.

Some 7-light years in size, this fragmented dark molecular cloud complex contrasts well against the colourful molecular clouds and stars of the Milky Way; the very dense dust of the dark nebulae scatters the blue light of the surrounding stars, producing a yellow-red bias.  In places the density within the nebula that energetic outflows can be seen in the form of the red nebulosity of RNO 109 and Herbig-Haro object HH-32.