NGC 5236 - Messier 83

Object: NGC 5236 The Southern Pinwheel Galaxy in the constellation Hydra at a distance of approximately 4.8 Mpc (15.6 Mly). It is a weakly barred spiral galaxy similar to our own, but about half as small, being only ~55 kly in diameter.

Subimages L: 11 x 900 sec (2.75 hrs), Combined FWHM=1.9", Deconvolved FWHM=1.3"
Subimages RGB: 9/11/11 x 900 sec (2.25/2.75/2.75 hrs)
Scope: Planewave CDK20, EFL = 3420 mm
Mount: Software Bisque Paramount ME
Camera: Apogee U16M-D09F set to -30C
Guiding: Lodestar on MMOAG, ExpTime=0.1s, dithered
Other: Clement 3.5" Bellerophon focuser, Optec Pyxis 3" rotator, Apogee AFW50-10S filter wheel, Astrodon filters.
Acquisition and processing: MaxIm DL/CCD v5
Imaged during: March-May 2012
Imaged from: Arkaroola Remote Observatory in the Northern Flinders Ranges of South Australia