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Friday, February 26, 2010
Rosette Nebula & a star cluster NGC 2239
Nebula in HST-palette, Red=S-II, Green=H-a and Blue=O-III
Last two nights I used for the Rosette nebula, weather gets cloudy after the midnight at both evenings.
I was positively surprised about the image quality since Rosette Nebula doesn't raise very high up here North, the maximum elevation is about 30 degrees, seeing and transparency were both lousy too.
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Guiding, SXV-AO @ 9Hz
Image Scale, 0,75 arcseconds/pixel
H-alpha 13x1200s, binned 1x1
Other channels are from a wide field image from 2009:
The original image can be found HERE
O-III 3x5min and S-II 3x5min with a Canon FD 200mm f1.8 @ f1.8
Wide field image of the Rosette Nebula in HST-palette