Messier 83

Southern Pinwheel, Barred-Spiral Galaxy, Hydra

May 2016. Cave Creek Canyon Observatory, Arizona Sky Village

Messier 83 or M83, also known as the Southern Pinwheel Galaxy and NGC 5236, is a barred spiral galaxy approximately 15 million light-years away in the constellation borders of Hydra and Centaurus. Nicolas Louis de Lacaille discovered M83 on February 23, 1752 at the Cape of Good Hope. Charles Messier added it to his catalogue of nebulous objects (now known as the Messier Catalogue) in March 1781. It is one of the closest and brightest barred spiral galaxies in the sky, and is visible with binoculars. Its nickname of the Southern Pinwheel derives from its resemblance to the Pinwheel Galaxy (M101).

Telescope: Astro Physics 175EDF f8.3
Mount: Astro Physics 3600GTO “El Capitan”
Camera: SBIG STT8300
Guider: SBIG FW8G OAG(Guided Filter Wheel)

L: 33×10 mins = 330 mins, R: 18×10 mins = 180 mins, G: 18×10 mins = 180 mins, B: 19×10 mins = 190 mins

Total Imaging Time: 14h 40m

Data Imaged remotely over 7 nights during May 2016.
Data acquisition & Processing by David Churchill.