A barred spiral whose inner ring and sweeping arms reveal the choreography of galactic dynamics.
NGC 1300 is a strongly barred spiral galaxy of type SB(rs)bc located in Eridanus, about 61 million light-years away. It spans roughly 110,000 light-years, and its bright disk covers about 6.2 × 3.1 arcminutes on the sky. The dominant bar shows offset dust lanes funnelling gas inward toward a sharply defined (rs) pseudoring, while scattered H II knots trace localized star formation along the bar–ring interface. Beyond the inner ring, the galaxy transitions into asymmetric outer arms, with the western arm curving into a tighter filament pattern and the eastern arm appearing broader and more diffuse. A prominent low-surface-brightness void separates the inner ring from the larger spiral structure, made more apparent by the extended faint halo that surrounds the disk. The field is filled with background galaxies, including edge-on systems and a bright elliptical above the halo, adding depth behind the main structure.
Imaged in LRGB and H alpha on my Planewave CDK 1000 at Observatorio El Sauce, Chile.
Image acquisition and processing: Mike Selby