Sunday, October 11, 2009
New project, The Tulip Nebula
I have started a new project with a Sh2-101, the Tulip Nebula.
So far, from three nights, I have only four twenty minutes exposures. Weather has been very volatile up here.
I will shoot more H-alpha and other channels for this object later.
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Two color chemes, HST Palette as S-II=Red, H-a=Green and O-III=Blue.
Second image is in natural colors composed from narrowband data.
Channels are balanced so, that image match to visible spectrum,
H-a + 24%S-II=Red, O-III=Green and O-III + 15%H-alpha=Blue.
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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" @ f4.65
Camera, QHY9 Guiding, SXV-AO @ 11Hz
Exposures:
H-alpha 4x1200s Binned 1x1
Color information is taken from much wider fiels image of Tulip Nebula.
Wednesday, October 7, 2009
The Bubble Nbula as a Stereogram
Parallel Vision, HST-palette 
Cross Vision, HST-palette 
Parallel Vision, Natural-palette 
Cross Vision, Natural-palette
- NOTE!
This is a personal vision about forms and shapes, based on some known facts and artistic impression.
Wieving instructions can be found from a Right hand side menu.
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Original Image with details can be found HERE.
Sunday, October 4, 2009
Bubble Nebula finalized
Now I have data for all the channels, H-alpha, S-II and O-III.Even though signal from S-II was very weak it was clearly there, I managed to balance it with stronge channels.
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Two color chemes, HST Palette as S-II=Red, H-a=Green and O-III=Blue.
Second image is in natural colors composed from narrowband data.
Channels are balanced so, that image match to visible spectrum,
H-a + 24%S-II=Red, O-III=Green and O-III + 15%H-alpha=Blue.
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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. - Imaeged in three nights between 27.09 - 04-09 2009, seeing varys between 4-2,5 FWHM - Telescope, Meade LX200 GPS 12" @ f4.65 Camera, QHY9 Guiding, SXV-AO @ 11Hz
Exposures:
H-alpha 21x1200s Binned 1x1 = 7h
S-II 10x600s Binned 3x3
O-III 5x600s Binned 3x3
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Here is a total captured Field of View, image size is about 3500 x2300 pixels.
Image turned to be a very high resolution one. Image scale is 0.8 arc seconds/pixel.
Seeing wasn't that good (2,5 FWHM at best) but slightly oversampled image is very good for Deconvolution algorithms. After deconvolution the FWHM was 1.9.
Saturday, October 3, 2009
Bubble Nebula in a H-alpha light
I have started again a new imaging project.
Image is exposed 7 hours so far, 21 x 1200s.
The RGB data in color image was imaged in 2007 with a QHY8 camera.
Image is gropped from large image and scaled down about 50%.
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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.
-
Imeged in two nights, seeing varys between 4-2,5 FWHM
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Telescope, Meade LX200 GPS 12" @ f4.65
Camera, QHY9
Guiding, SXV-AO @ 11Hz
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