NGC 6384 – A Spiraling Study in Contrast
Residing in the constellation Ophiuchus, about 77 million light-years away, NGC 6384 is a magnificent SAB(r)bc barred spiral galaxy, stretching 6.2 × 4.5 arcminutes, or about 138,000 light-years across.
At its center lies a luminous, slightly elongated bulge of older yellow stars, anchored by a prominent stellar bar. A faint inner ring encircles the core, from which emerge multiple loosely wound, flocculent spiral arms—patchy, fragmented, and filled with young, blue stars, only a few million years old.
Threading through these arms are prominent dark dust lanes, made of cold molecular gas and fine carbon- and silicate-based dust. These lanes don’t just block light—they are the raw material for new stars. Within them, gravity slowly draws gas together, compressing it into dense knots that ignite as newborn stars. These birthplaces often glow faintly in H-alpha, seen here as pink emission regions scattered along the spiral arms and at the bar ends.
The outer disk appears subtly asymmetric, hinting at past tidal interactions or external gas accretion. A gentle color gradient, from the warm, aged core to the cool, active outer arms, captures the galaxy’s ongoing evolution.
NGC 6384 is also known for hosting SN 1971L, a Type Ia supernova that briefly outshone its host galaxy. Look closely: the background is dotted with distant galaxies, some mere smudges, others showing clear structure—quiet beacons from far deeper in the universe.
Imaged in LRGB and H alpha on my Planewave CDK 1000 at Observatorio El Sauce, Chile.
Image acquisition and processing: Mike Selby