page_title: NGC 3239
hierarchical_section_title: NGC 3239
caption_attribution_description: English: Picture Details: Optics 32-inch Schulman Telescope (RC Optical Systems), Acquired remotely Camera SBIG STX 16803 CCD Camera Filters AstroDon Gen II Dates January 2012 Location Mount Lemmon SkyCenter Exposure LRGB = 260:70:70:70 minutes Acquisition ACP Observatory Control Software (DC-3 Dreams),TheSky (Software Bisque), Maxim DL/CCD (Cyanogen) Processing CCDStack (CCDWare), Photoshop CS5 (Adobe), PixInsight Credit Line and Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
context_page_description: NGC 3239 is an irregular galaxy in the constellation of Leo. It is the host of SN 2012A, the first supernova of 2012. The galaxy, which was discovered in 1784 by William Herschel, is part of the New Galactic Catalogue, and with an apparent magnitude of 13.5, is not visible to the naked eye. It has been shown to have many HII regions, while also having some star formation regions. These signs are common in galactic mergers, which is why it is believed that NGC 3239 is the result of a galactic merger. The supernova, SN 2012A, has been classified as a type IIP supernova, with a shorter plateau and non-constant luminosity.
context_section_description: NGC 3239 is an irregular galaxy in the constellation of Leo. It is the host of SN 2012A, the first supernova of 2012. The galaxy, which was discovered in 1784 by William Herschel, is part of the New Galactic Catalogue, and with an apparent magnitude of 13.5, is not visible to the naked eye. It has been shown to have many HII regions, while also having some star formation regions. These signs are common in galactic mergers, which is why it is believed that NGC 3239 is the result of a galactic merger. The supernova, SN 2012A, has been classified as a type IIP supernova, with a shorter plateau and non-constant luminosity.
caption: Image of NGC 3239 (top center) as taken by the Mount Lemmon Sky Center, the bright spot inside the irregular galaxy is SN2012A
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