Object: Constellation: Coordinates: Size: Brightness:
NGC 253 Scl 00h48m / -2517' 27.5' x 6.8' 7.3mag

The fantastic spiral galaxy NGC 253 (Sculptor Galaxy, Silver Coin, Silver Dollar Galaxy) in the constellation Sculptor on October 18 / 19, 2014. The galaxy is approximately 12 million light years from Earth and was discovered by Caroline Herschel in 1783 (source: Wikipedia).

Twenty-one 3 minute exposures at ISO 800 with no dark frame subtraction were stacked with Deep Sky Stacker (resulting in a 1 h 3 min exposure) and further processed in Photoshop. In Switzerland, this beautiful galaxy doesn't rise more than 18 degrees above the horizon. In addition, strong winds ruined details in the image. I might redo this bright and large galaxy one day but until then, this image will do...
Equipment: Canon EOS 450D Baader modified camera, TeleVue Paracorr Type II coma corrector, 16" f/4.5 "Ninja" dobsonian telescope riding on a dual-axis Tom Osypowski equatorial platform, Lacerta MGEN autoguider, Lacerta off axis system (field of view comparison: image of the moon with the same equipment).

Search chart for NGC 253. Map © 2014 "The Mag-7 Star Atlas Project", www.siaris.net. Map is modified and slightly distorted (combination of map 8 & 15). The map can be downloaded here .