This beautiful object has caught my eye for a long time, but only now, thanks to the reference material from AstrophotoMarket.com, was I able to get my hands on it. Colloquially known as a garlic bulb, I hope that, although not everyone is a fan of this vegetable, this one will prove to be aesthetically pleasing.

CTB1 was discovered in 1955 by George Abell on plates from the Palomar survey, who, based on its shape, believed it to be a planetary nebula. In 1960, Robert W. Wilson (who later shared the Nobel Prize with Arno Penzias for the discovery of the cosmic background radiation) and J.G. Bolton correctly cataloged it as part of an early radio telescope survey. This list was known as CalTech's List B, hence the designation CTB. In 1966, Abell included it in his catalog of planetary nebulae (not to be confused with his catalog of galaxy clusters) with the annotation: "it may be a supernova remnant," because based on the radio signal, it was already thought to be a supernova remnant. By 1968, this assumption was finally confirmed. Therefore, CTB1 is likely the correct designation for this object, even though Abell was actually the discoverer.

The candidate planetary nebula PN We 2-262 is visible in the upper left corner of the image as an inverted comma. We 2-262 is a loop nebula located near the supernova remnant CTB 1. It was discovered by Ronald Weinberger of the Max Planck Institute for Astronomy while studying the Palomar Observatory Sky Survey plates and was included in Weinberger's 1977 paper, in which he listed 335 objects identified as possible, probable, or actual planetary nebulae. In 2008, David Frew concluded that it was merely an HII region. Subsequent observations showed it to be a bright, encircled globule.

Antlia 3nm H-alpha 2.00" 300 sec. x 298

Antlia 3nm OIII 2.00" 300 sec. X 305

Location: Nerpio, Spain, AstroCamp Telescope Hosting: AstrophotoMarket.com