This image shows part of the great Vela supernova remnant shock wave. It looks like a finely threaded rope as it fans out through space. The supernova is about 12,000 years old, and lies about 800 ly away.

PlaneWave 12.5″ Astrograph with ZWO ASI62000 camera, Astrodon filters and ASA DDM-85 gearless mount. F/5 LRGB (70/3min L, 24/3min RGB). All subexposures binned 2×2.