Saturday, July 16, 2011
"Veil Nebula", the apparent scale in a sky, zoom in series
I have shot many targets with several focal lengths.
Due that, I will publish some of my material as an image sets, with different field of view and detail levels.
The fractal nature of our universe stands out nicely by this way and it will make the orientation more easy.
Many times, it's difficult to understand the image scale of astronomical images.
Due that, I will add a Moon circle in images to show the scale in a sky.
The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
"Veil Nebula", a supernova remnant
In constellation Cygnus
Images are 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.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
Images used in the series above, from top to bottom
- A wide field image of the "Veil Nebula" is taken with a Tokina AT-X 300mm f2.8 camera lens.
- A zoomed in version of previous image
- A close up imaged with a SkyWarcher 80 ED telescope, focal lenght ~700mm.
Links to an original images used in series from to to bottom
Click for a large image!
Sh2-129, the scale in a sky, zoom in series
I have shot many targets with several focal lengths.
Due that, I will publish some of my material as an image sets, with different field of view and detail levels.
The fractal nature of our universe stands out nicely by this way and it will make the orientation more easy.
Many times, it's difficult to understand the image scale of astronomical images.
Due that, I will add a Moon circle in images to show the scale in a sky.
The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
Sharpless 129
In constellation Cepheus
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.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
Images used in the series above, from top to bottom
- A mosaic image of Sh2-129 and IC1396 at Right. Images are taken with a Canon FD200mm f2.8 camera lens and QHY8.
- A Sh2-129 half of the previous mosaic
- Object imaged with a super fast camera optics, Canon EF 200mm f1.8 full open. QHY9 astro camera.
Links to an original images used in series from to to bottom
Friday, July 15, 2011
IC 443, a SNR, the scale in a sky, zoom in series
I have shot many targets with several focal lengths.
Due that, I will publish some of my material as an image sets, with different field of view and detail levels.
The fractal nature of our universe stands out nicely by this way and it will make the orientation more easy.
Many times, it's difficult to understand the image scale of astronomical images.
Due that, I will add a Moon circle in some of the images to show the angular scale in a sky.
The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
IC443, the "Jellyfish Nebula"
In constellation Gemini
Images are 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.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
Images used in the series above, from top to bottom
- A wide field image of IC 443 and NGC 2175, the "Monkey Head Nebula", at Left. Image is taken with a Canon FD200mm f2.8 camera lens.
- IC 443, Tokina AT-X 300mm f2.8 camera lens.
- A zoomed in version of previous image
- A close up of the "Jelly Fish Nebula" imaged with a Meade LX200 GPS 12" telescope, focal lenght ~2000mm.
Links to an original images used in series from to to bottom
Thursday, July 14, 2011
M17, the "Omega nebula", reprocessed
Since my processing technique gets better and the time of year doesn't give any support, I have reprocessed some older images. There is now star colors added and other processing is tweaked too.
"Omega Nebula", M17, in Sagittarius
Ra 18h 20m 26s Dec -16° 10′ 36″
M17, imaged with the Northern Galactic members remote telescope in Australia.
The Omega Nebula, also known as the Swan Nebula or the Horseshoe Nebula, cataloged as Messier 17 and NGC 6618. This H-II region loactes in constellation Sagittarius. Distance from Earth is between 5000-6000 light years and it spans about 15 light years in diameter. Image area is 30'x30', about half a degree.
Open cluster of 35 hot young stars lies inside of the nebula and causes ionization glow of the elements.
This composition is very close to a visual spectrum.
Original processing and details:
http://astroanarchy.blogspot.com/2010/06/m17-omega-nebula.html
My 3D-studies of the object:
http://astroanarchy.blogspot.com/2011/05/new-version-of-m17-stereo-pair-3d.html
My 3D-studies of the object:
http://astroanarchy.blogspot.com/2011/05/new-version-of-m17-stereo-pair-3d.html
The telescope and technical information:
16" RCOS ja Apogee U9000 camera.
LRGB combo.
H-alpha 6x1200s, Dark and Flat calibrated.
O-III 1x1200s, Dark calibrated
S-II 2x1200s, Dark calibrated
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations
Levels, curves and color combine in PS CS3.
Seeing was not good at the time of imaging, FWHM 5"
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