The Sculptor Galaxy, also known as the Silver Coin or Silver Dollar Galaxy, NGC 253, is an intermediate spiral galaxy in the constellation Sculptor. The Sculptor Galaxy is a starburst galaxy, which means that it is currently undergoing a period of intense star formation. Distance 11.4 million light years.
The galaxy was discovered by Caroline Herschel in 1783 during one of her systematic comet searches.
GSO 10"F4 Newtonian, 1138 x 30 second subs or about 9.4 hours, Canon 1100D full spectrum, HEQ5 Pro unguided. Taken over 6 nights, stacked in DSS, processed in photoshop.
Full frame at astrobin --->
http://astrob.in/314177/B/