Friday, September 25, 2009
Pelican Project, Grande finale
Nebula in HST-palette, S-II = Red, H-alpha = Green and O-III = Blue
A Grop from the bigger image
A Grop from the bigger image 
H-alpha + 20%S-II = Red, O-III = Green and O-III + 15% H-alpha = Blue
Nebula in H-alpha light (Ionized Hydrogen)
Nebula in H-alpha light (Ionized Hydrogen)
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Now I have S-II (Ionized Sulfur) and O-III (Ionized Oxygen) channels, so making fullcolor image is possible
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Camera QHY9, Optics Meade LX200 GPS 12" forced to @ f4.65 Guiding with SXV-AO active optics unit 11Hz Filters Baader H-alpha 7nm, 6h, 20 min subs Baader O-III 8,5nm 1h, 10 min. subs binned 3x3 S-II 1h 40, 10 min subs binned 3x3 - Note. a special technique of mine is used to balance weaker channels with Hydrogen alpha. Information about that tech. can be found HERE
Tuesday, September 22, 2009
Pelican project continues
Last night I was able to capture more lights for the target.
Now there is 18 x 1200s H-alpha filteret light, Six hours.
I place here a small preview gropped from the image.
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Next I'll shoot O-III and S-II channels for the color image,
Weather doesn't look too good now though.
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Camera QHY9,
Optics Meade LX200 GPS 12" forced to @ f4.65
Guiding with SXV-AO active optics unit 11Hz
Filter Baader H-alpha 7nm
Exposures 18x1200 s.
Monday, September 21, 2009
Pelican Nebula, start of the project
So far, not a very lucky start.
I have spend four nights with this target and the result is only five 20min. frames.
The see is open and it keeps sending clouds of mist night after a night.
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Image is kind of noisy, doe too few light frames, but I'll post it here to wait more to come.
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Camera QHY9,
Optics Meade LX200 GPS 12" forced to @ f4.65
Guiding with SXV-AO active optics unit 11Hz
Filter Baader H-alpha 7nm
Exposures 5x1200 s.
Sunday, September 20, 2009
NGC 6888, deconvolution test
A fellow astro imager, Neil Fleming, in Yahoo group "astro_narrowband"
give me an idea about using more deconvolution algorithm to this image.
Thanks a lot Neil!
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After testing several softwares, I found CCDSharp giving me best resul in this case.
( CCDSharp is a freeware from Sbig )
33 iterations of Lucy-Richardson deconvolution.
The Stars came out just fine, so no separate processing for them.
Final result was way more better than I was expecting!
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You can compare those images to a previous ones, HERE in a HST-plalette and HERE in a Natural colors.
Imaging details can be found behind the links too.
Hydroge alpha channel alone
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