Tuesday, June 15, 2010
M20, the "Triffid nebula", more lights added
M20, the "Triffid Nebula" in constellation Sagittarius. Distance about 7600 light years.
Less compressed versions in my Portfolio:
http://astroanarchy.zenfolio.com/p1072219942/h3197814b#h3197814b
This is a third version of the M20. Image gets deeper and deeper as more exposures gets added.
Less compressed versions in my Portfolio:
http://astroanarchy.zenfolio.com/p1072219942/h3197814b#h3197814b
This is a third version of the M20. Image gets deeper and deeper as more exposures gets added.
Previous versions can be seen here:
An experimental Starless version to show the actual nebula.
M20, imaged with a Northern Galactic members remote telescope in Australia,
Impressive instrumentation and great location in Souther Australia under a dark Sky, makes possible to go deep in very short time!
Technical details
16" RCOS ja Apogee U9000 camera.
LRGB combo.
LRGB-image, Luminance=5x300s + 5x600s, total 1h 15min.
Red=3x300s, Dark and Flat calibrated.
Green=3x300s, Dark and Flat calibrated.
Blue=3x300s + 1x600s, Dark and Flat calibrated.
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Cropped image at 100% scale
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