Saturday, November 27, 2010
Sh2-188, a Planetary Nebula
Sharpless object 188
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.
Sh2-188, PNG128.0-4.1, in constellation Cassiopeia. An asymmetrical planetary nebula was first photographed in 1965, it thought to be a Supernova remnant due its crescent like shape, now it's known to be a Planetary Nebula. Distance from Oulu, Finland, is ~850 light years. Apparent diameter is ~5 arcmin.
There is not too many images of this Planetary Nebula around. I made a HST-palette composition out of ionized elements, H-a, O-III and S-II, I haven't never seen this one presented like that!
I used a special technique of mine to dig out all the information from the raw data, this is a extremely dim target. I might shoot more lights for this in future.
Sh2-188 in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 3Hz
Image Scale, 0,75 arcseconds/pixel
Exposures H-alpha 7x1200s, binned 1x1 + 6x1200s, binned 3x3
O-III 3x1200s, binned 3x3
S-II 3x1200s, binned 3x3
Friday, November 26, 2010
A new project, Jones 1 planetary nebula
Jones1, colorized O-III, 5h 20min.
Jones 1, PK104-29.1, is a one of the dimmest planetary nebula. It locates in constellation Pegasus.
I started this project last night and didn't realize how dim this really is. In this image there is 16x1200s O-III exposures, 5h 20min. ( Baader 8,5 nm O-III filter) and it was barely visible in any of the subexposures.
I will shoot more O-III later for this. There is some H-alpha emission and I will shoot that later too.
I like the "mystique" outlook of this nebula.
There is not too many images of this around due the extremely low surface brightness, even though it has a largish diameter to a planetary nebula, about Four arcminutes.
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 3,5Hz
Image Scale, 0,75 arcseconds/pixel
O-III 16x1200s, binned 1x1, 5h 20min.
Thursday, November 25, 2010
M 76, the "Little Dumbbell Nebula"
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.
The "Little Dumbbell", Messier catalog number 76, also known as NGC 650/651, the "Barbell Nebula or the "Cork Nebula". This bipolar planetary nebula locates in constellation Perseus.
Distance is about 2500 light years and average dimension is 1.23 light years across.
Smallish apparent dimensions, 2,7 x 1,8 arcmin, makes this target difficult to image.
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
A closeup
Technical details:
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" @ f5
Camera, QHY9 Guiding, SXV-AO @ 3,5Hz
Image Scale, 0,75 arcseconds/pixel
Exposures H-alpha 12x1200s, binned 1x1
O-III 7x1200s, binned 1x1
S-II 2x1200s, binned 2x2
Thursday, November 4, 2010
IC 63 as an animated 3D
Animations are made by creating artificial parallax to an image. Then two images are animated together by using conversion web service, Start3D. There can be some artifacts in images, due the experimental nature of this work! The volumetric models are based on some known facts and an artistic impression.
Please, let the images load for few seconds to see them animated!
Other 3D-formats:
Original 2D-image with the technical details:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Subscribe to:
Posts (Atom)
