Today's Amateur Astronomy Photo of the Day:

NGC 1433 (PGC 13586) is a barred spiral galaxy located approximately 46 million light-years away in the southern constellation Horologium. A member of the Dorado Group (often associated with the extended Fornax Cluster region), it features a prominent central bar composed of stars, gas, and dust enclosed by a striking double-ring structure. The bar drives much of the galaxy's internal dynamics, channeling gas toward the nucleus. Through a 0.4 m (16″) telescope, resolving details such as the bright core, the delicate dust filaments winding through the inner bar, and the faint outer spiral arms becomes possible. With coordinates centered at RA 03h 42m 01.1s, Dec -47° 13′ 21.1″, it is an exceptional target for southern observers.

On November 2, 2026, at 04:20:36 UTC, the ATLAS survey (ATLAS_Bot1) detected SN 2026ahvu, a Type Ia supernova shining at magnitude 17.1. This image was captured shortly after discovery, across the night of November 3–4, 2026 (21:10 to 02:20 UTC-3), from countryside São Paulo, Brazil. Total integration time is 2h 43m 20s using a custom-built 16″ Truss Newtonian (1810.3 mm focal lenght and image scale of 0.428″/px). Aperture photometry performed in ASTAP yielded an apparent magnitude of 15.9 for the supernova, marking clear brightening post-discovery.

The framed field of view spans roughly 25′ 5″ × 17′ 9″. In the annotated plate-solved frame, several faint background galaxies are visible, including PGC 130313, PGC 505468, PGC 505418, and PGC 505739—the latter dipping beyond magnitude 18.