Thursday, January 31, 2008
Monday, January 28, 2008
IC 1848, start of the project
Last night I started a new project with IC 1848.
Here is first Ha exposures, 5x1800s and 7x900s.
I'll shoot more lights for H-alpha and color in near future, if weather allows.
This is a very dimm target for my focal lenght, LX200 GPS 12" @ f6.3
It will need an other five hours of exposures, I think.
Camera: QHY8 cooled 6mb color cam.
Guiding: SXV-AO active optics system
Thursday, January 24, 2008
IC 1805 core, color added
The core of IC 1805 4h of H-a
LX200 GPS 12" f6.3 + SXV-AO (Active Optics system) and famous QHY8
Added 2h of RGB data trough UHC-s filter
WORK FLOW
H-alpha RGB combination method under PS:
Both, H-a and RGB, processed first separetly by usual manner.
H-a converted to RGB format + Blue&Green channels filled with black.
(Reult is a Red image)
Red image is pasted top of the RGB as "lighten"
Red images gamma set to litle bit lighter, about 1,25
Flatten image.
This image is then copyed to top of the original grayscale image in "lighten" mode.
Flatten image.
This image is pasted to top of the RGB Ha combination image and used
as luminance with about 50% opacity.
Color balance + other small tweaking.
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