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.
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