Sunday, May 22, 2011
Rosette Nebula, the scale in a sky, zoom in sereies
I have shot many targets with several focal lengths.
Due that, I will publish some older images 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 images to show the angular scale in a sky.
The full Moon has an angular size of ~30 arc minutes in a sky, that's equal to ~0,5 degrees.
"Rosette Nebula"
Ra 06h 33m 45s Dec +04° 59′ 54″
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.
Images from top to bottom
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.
Images from top to bottom
1. Two panel mosaic of Cone and Rosette Nebulae. Shot with a Canon EF 200mm f1.8 lens, Baader NB-filters and QHY9 cooled astronomical camera.
2. The Rosette half of the mosaic image.
3. Rosette Nebula with a Tokina AT-X 300mm f2.8 lens, Baader NB-filter set and QHY9 astro camera.
4. Rosette closeup with Meade LX200 GPS 12" 2000mm, NB-filters and QHY9 camera.
Technical details for all of the images above, can be found in my portfolio:
http://astroanarchy.zenfolio.com/
Technical details for all of the images above, can be found in my portfolio:
http://astroanarchy.zenfolio.com/
Saturday, May 21, 2011
Wide field vs closeups, Heart Nebula, IC 1805
I have shot many targets with several focal lengths.
Due that, I will publish some older images 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 images to show the angular scale in a sky.
The full Moon has an angular scale of ~30 arc minutes in a sky, that's equal to ~0,5 degrees.
A wide field image of the area
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle at upper Left corner.
A wide field image of the area, covering about 5 degrees, ~300', of the sky.
(Ten full Moons side by side)
Two main objects can be seen in the image:
IC 1805, the "Heart Nebula", locates at upper Right.
IC 1848 can be seen at lower Left.
Image is shot with a Canon EF 200mm f1.8 camera lens and a QHY9, a cooled astronomical camera.
Baader narrowband filter set, total exposure time was ~1,5 hours (A very fast lens was used!). Original Blog post can be found HERE.
A zoom in image series of IC 1805, the "Heart Nebula"
In this zoom in series, three images from IC 1805 are taken by using different focal lengths.
A gray circle shows the size of the full Moon, ~30' or ~0,5 degrees.
First image is taken with a focal length 200mm, Canon EF200mm @f1.8
Second image with a SkyWatcher 80ED ~600mm f7.5
Third one with Meade LX200 GPS 12" ~2000mm f6.5
Wide field vs closeups, Soul Nebula, IC1848
I have shot many targets with several focal lengths.
Due that, I will publish some older images 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 images to show the angular scale in a sky.
The full Moon has an angular scale of ~30 arc minutes in a sky, that's equal to ~0,5 degrees.
Image is in HST-palette, (HST=palette used in Hubble Space Telescope images)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle at upper Left corner.
A wide field image of the area, covering about 5 degrees, ~300', of the sky.
(Ten full Moons side by side)
Two main objects can be seen in the image:
IC 1805, the "Heart Nebula", locates at upper Right.
IC 1848 can be seen at lower Left.
Image is shot with a Canon EF 200mm f1.8 camera lens and a QHY9, a cooled astronomical camera.
Baader narrowband filter set, total exposure time was ~1,5 hours (A very fast lens was used!). Original Blog post can be found HERE.
Closeup of IC 1848, the "Soul Nebula"
NOTE.
The size of the full Moon (0,5 degrees) is marked as a gray circle at lower Right corner.
The size of the full Moon (0,5 degrees) is marked as a gray circle at lower Right corner.
Image is shot with a Tokina AT-X 300mm f2.8 camera lens and a QHY9, a cooled astronomical camera.
Baader narrowband filter set, total exposure time was ~5 hours . Original Blog post can be found HERE.
Longer focal length images of the "Soul Nebula"
NOTE.
The size of the full Moon (0,5 degrees) is marked as a gray circle.
This detail can be seen, in wider field image above, just left from the center of the Nebula.
The size of the full Moon (0,5 degrees) is marked as a gray circle.
This detail can be seen, in wider field image above, just left from the center of the Nebula.
A long focal lenght image of Soul Nebula, covering little over 0,5 degrees, ~30', of the sky vertically.
(Full Moons size)
Image was shot with a Meade LX200 GPS 12" telescope @ f0.5 and a QHY9, a cooled astronomical camera.Baader narrowband filter set, total exposure time was ~8 hours. Original Blog post can be found HERE.
A long focal lenght image of Soul Nebula, covering little under 0,5 degrees, ~30', of the sky horizontally.
(Full Moons size)
NOTE.
The size of the full Moon (0,5 degrees) is marked as a gray circle.
This detail can be seen, in wider field image, at lover Right corner of the Nebula.
The size of the full Moon (0,5 degrees) is marked as a gray circle.
This detail can be seen, in wider field image, at lover Right corner of the Nebula.
A long focal lenght image of Soul Nebula, covering little under 0,5 degrees, ~30', of the sky horizontally.
(Full Moons size)
Image was shot with a Meade LX200 GPS 12" telescope @ f0.5 and a QHY9, a cooled astronomical camera.Baader narrowband filter set, total exposure time was ~2,5 hours. Original Blog post can be found HERE.
Thursday, May 19, 2011
Wide field vs closeups, North America & Pelican Nebulae, NGC7000
I have shot many targets with several focal lengths.
Due that, I will publish some older images 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 images to show the angular scale in a sky.
The full Moon has an angular scale of ~30 arc minutes in a sky, that's equal to ~0,5 degrees.
North America & Pelican Nebulae, NGC 7000 & IC5070
An emission Nebula in constellation Cygnus
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 at lower Left corner.
A wide field image of the area spans about 4,5 degrees vertically (Nine full Moons side by side)
I have closeup images from two areas:
First one shows the "Great Wall" area just Left from the image center.
The "Head of the Pelican", in a second closeup image, locates at center next to a Right edge.
Image was shot with a Tokina AT-X 300mm camera lens at F2.8. A Baader narrowband filter set was used, the total exposure time was about 3h. Original Blog post can be found HERE.
Closeup of NGC7000, the "North America Nebula"
A HST-palette closeup of North America Nebula's "Great Wall" area.
Image width is ~30' = ~0,5 degrees, one full Moon size
Image was shot with a Meade LX200 GPS 12" telescope @ f0.5 and a QHY9, a cooled astronomical camera.
Baader narrowband filter set, total exposure time was ~6 hours. Original Blog post can be found HERE.
Closeup of IC 5070, the "Pelican Nebula"
A "Natural" color closeup of the Pelican Nebula.
Image width is ~30' = ~0,5 degrees, one full Moon size.
Note! In wide field image above, this area is rotated 90 degrees counter clockwise.
Image was shot with a Meade LX200 GPS 12" telescope @ f0.5 and a QHY9, a cooled astronomical camera.
Baader narrowband filter set, total exposure time was ~6 hours. Original Blog post can be found HERE.
Closeup of a closeup
A closeup from the image above in HST-palette.
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