NGC253, the "Silver Dollar Galaxy", closeup
A spiral galaxy in constellation Sculptor.
This galaxy is undergoing a period of intense star formation. Areas with a Blueish hue, are most active regions of the star formation. This is a nearby galaxy, distance is "only" about 11 million light years.
Largish target, apparent dimensions are, 27,5' x 6,8'. Longer axis is almost as wide as a full Moon (30')
16" RCOS ja Apogee U9000 camera.
LRGB combo. An Australian remote telescope
14x600s for the Luminance and 2x600s / RGB-channel . Dark, Bias and Flat calibrated.
Raw data is shared by Petri Kehusmaa and J-P Metsavainio
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.