clic here for 140% size 1800 x 1350 (540 kB)
clic here for a full frame image in 50% size 1842 x 1238 (733 kB)
About this Image
The Centaurus A galaxy is situated in the M83 group of galaxies. It is one of the most investigated and peculiar galaxies in the sky,
and is a strong source of radiation in all frequency ranges; it is actually the nearest radio galaxy.
A supermassive black hole at the center of the galaxy is exciting the surrounding areas to emit various kinds of powerful radiation.
TEC-140 APO refractor with TEC flattener at f/7;
|Camera||SBIG STL-11000M at -20C, internal filter wheel|
|Date||May 25-27, 2006.|
|Sky Conditions||mag 7 sky, temperature 12-15 C, good seeing|
LRGB= 180:40:30:40 min (10-minute sub-exposures at f/7);
L= 60 min at f/16.
Image aquisition and calibration in Maxim DL 4.11;
Photoshop: color balance, curves, unsharp mask, noise handling