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Sunday, September 26, 2010

NGC 2070, the "Tarantula Nebula"

NGC 2070 in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.

Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission.

This composition is very close to a visual spectrum.

Tarantula nebula, NGC 2070, also known as 30 Doradus, is an ionized Hydrogen region in the Large Magellanic cloud, visible in southern hemisphere. Distance from Earth is about 160.000 light years.

A closeup of Tarantula Nebula

The telescope and technical information:

16" RCOS ja Apogee U9000 camera. 
LRGB combo.
H-alpha 5x1200s, Dark and artificial Flat calibrated.
2 x O-III 1200s and 5 x 900s Dark and artificial Flat calibrated.
2 x S-II 1200s, Dark and artificial Flat calibrated.
Raw data is shared with "Team Finland"

Processing workflow:
Image acquisition, MaxiDL
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations added 50% to non convoluted data
Levels, curves and color combine in PS CS3.

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