Wednesday, January 26, 2011
The "Cone Nebula"
Finally a clear night up here 65N!
NGC 2264, the "Cone Nebula"
Ra 06h 41m 06s Dec +09° 53′ 00"
HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
After a long cloudy period we had a clear night. I was able to finalize this target at one night, it'll benefit some more exposures though but I might leave it as it is. Seeing was bad, as usually at this time of year up here, Temperature dropped to -24 Celsius.
The Cone Nebula is an Hydrogen emission region in the constellation Monoceros. Nebula is located about 2600 light years away from Earth. The cone Nebula forms part of the nebulosity surrounding the Christmas Tree Cluster. Note, NGC 2264 refers to both objects, not the nebula alone.
I have shot this object and the Rosette Nebula as a mosaic at Spring 2009, image can be found here:
The Cone Nebula area can be seen at the Left side.
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations, 50% mix..
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 6,5Hz
Image Scale, 0,75 arcseconds/pixel
Baader H-alpha 7nm 12x1200s, binned 2x2
Baader O-III 8,5nm 3x1200s, binned 3x3
S-II is taken from my older wide field image
A wide field image of Cone Nebula used for the S-II channel is part of the mosaic I shot at Spring 2009.
Image is shot with a QHY9 astronomical camera, Canon EF 200mm f1.8 lens and the Baader narrowband filter set, H-a, S-II and O-III.
Cat's Eye Nebula reprocessed
Since my processing technique gets better and weather doesn't give any support, I have reprocessed some older images. There is now star colors added and other processing is tweaked too.
NGC 6543, the "Cat's Eye Nebula"
Ra 17h 58m 33s Dec +66° 37′ 59"
Image is in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
In this image the rarely imaged outer shell is visible. This was very difficult to process, due the massive brightness difference between the core and the outer parts.
The Cat's Eye Nebula, NGC 6543, Cladwell 6, is a planetary nebula in constellation Drago.
Distance is about 3300 light years.
More information in Wikipedia:
Image is shot with a QHY9 and the Meade LX200 GPS 12" @ f5, pixel scale 0.65pixels/arc second.
Original versions from November 2008, with technical details:
Just the Eye part of the nebula, enlarged 400% from my image.
There is a hint of co centric circles visible around the nebula.
Faint rings are spherical shells ejected by the central star in the distant past. The exact mechanism of ejections is unclear. Image is in HST-palette.
Tuesday, January 25, 2011
Sh2-101, the "Tulip Nebula" closeup as a Stereo Pair 3D
Parallel vision 3D
Cross vision 3D
Other 3D-formats:
Original 2D:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Sh2-101, the "Tulip Nebula" closeup as an anaglyph Red/Cyan 3D
You'll need Red/Cyan Eyeglasses to be able to see this image right.
Note, if you have a Red and Blue filters, you can use them! Red goes to Left eye.
Other 3D-formats:
Original 2D:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
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