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NGC 253 in Sculptor is large galaxy visible deep in the Southern skies at a DEC of -25:17 degrees. It has a visual magnitude of 7.1 and an apparent size of 25 x 7 arc minutes. It is estimated to be 10 million light years away, about the same as NGC 891. It was discovered by Caroline Herschel on September 23, 1793, and is one of her major discoveries. It is the brightest member of the Sculptor group of galaxies, one of the nearest groups to our Local Group. It is sometimes called the Silver Coin Galaxy, or simply Sculptor Galaxy. Imaging data: Date: Sep 2-3 2008 Location: New Ringgold PA Optics: Televue NP101 at f/5.4 Mount: Paramount ME Camera: SBIG ST-8XME / CFW-8 Guiding: Integral self guiding Exposure: Luminance: 90 minutes unbinned, RGB: 36 min ea binned 2x2. Subexposures were 3 min for a total of 3 hours 18 minutes Processing: Image acquisition using CCD Autopilot. Initial processing was done using Maxim DL with subsequent processing with Photoshop. |
Blue Mountain Vista Observatory New RInggold PA |
NGC 253 The Sculptor Galaxy |