Thursday, October 15, 2009
A new project, The Cat's Eye Nebula
Cat's Eye nebula is a small, complex structured, Planetary nebula in constellation Drago.
In this first version, only H-alpha light is exposed. There is strong O-III component in its halo.
Doe its small angular size, good seeing is needed to show any internal details in nebula's core.
Seeing was really bad and I just tryed to capture H-a for outer halo.
However, there was some details in bright core as well.
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Details;
-Camera, QHY9
- Optics, Meade LX200 GPS 12" @ f4.65
- Guiding, Lodestar and SXV-AO @ 8Hz
- Exposures, 10x600s and 4x1200s with 7nm H-alpha filter.
- image scale is 0.8 arcsecond/pixel
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A "pre Stereogram"
Parallel
Cross
Wednesday, October 14, 2009
Tulip Nebula Finalized
Last night I got more H-alpha light and O-III and S-II 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.
- Telescope, Meade LX200 GPS 12" @ f4.65 Camera, QHY9
Guiding, SXV-AO @ 11Hz
Exposures: H-alpha 10x1200s Binned 1x1
O-III 6x600s, binned 3x3
S-II 4x600s, binned 3x3
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The name "Tulip" is well deserved.
Monday, October 12, 2009
NGC 6888, Reprocessed
I reprocessed image of NGC 6888.
Colors are now more vivid and details are even more visible.
Original images and imaging details can be found here:
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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.
-
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.
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