I’ve nicknamed this object the “Gramophone Nebula”. Its density is only 10 billion molecules per cubic meter – about 1 trillionth the density of the earth’s atmosphere. It lies about 1500 ly away.

PlaneWave 12.5″ Astrograph with an ST11000 camera, Astrodon filters, and ASA gearless DDM-85 mount. F/5 LRGB (30/8 min L, 5/8min each 2×2 RGB).