Wednesday, June 1, 2011
M57, the "Ring Nebula", apparent scale in the sky
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.
M57, A planetary Nebula
In constellation Lyra
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
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. Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.This composition is very close to a visual spectrum.
This is generally a difficult target, due the small angular size and an extreme dim outer ring structure versus bright core.
One image of M57 is used to make this image series.
Original image and technical details can be found here:
Tuesday, May 31, 2011
Apparent scale study of a rarely imaged planetary, Sharpless 216
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.
Sh2-216, A planetary Nebula in Perseus, the closest PN to Earth ever discovered
Ra 04h 45m 35s Dec +46° 48′ 30"
Image is in HST-palette 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 in all of the images.
This is a very large and dim object.
Images used in the series above from top to bottom
- Large field of view image shows an extremely dim supernova remnant at Left. Imaged with a Canon EF 200mm f1.8 camera lens at full aperture
- A zoomed in version from the previous image
- A closeup image of Sh2-216 with Tokina AT-X 300mm f2.8 camera lens
- A zoomed in version from the previous image
NGC2264, the "Cone Nebula", apparent scale in the sky
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.
NGC 2264, the "Cone Nebula"
In constellation Orion
Image is in HST-palette 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 in all of the images.
Images used in the series above from top to bottom
- 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.
- The Cone Nebula half of the mosaic image.
- Zoomed in version from the previous image
- A close up of the Cone Nebula imaged with a Meade LX200 GPS 12" telescope, focal lenght ~2000mm.
Monday, May 30, 2011
NGC7380, the "Wizard Nebula", apparent scale in the sky
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.
NGC 7380, Sharpless 142 (Sh2-142)
In connstellation Cepheus
Sh2-142 alias NGC 7380, in HST-palette 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 in all of the images.
Images used in the series above from top to bottom
- A wide field mosaic from the Bubble and Sharpless 157 to the Wizard Nebula at Right. Images are taken with a Tokina AT-X 300mm camera lens.
- A Sh2-142, the Wizard Nebula part of the mosaic, Tokina AT-X 300mm
- Zoomed in version from the previous image
- A close up of the Nebula imaged with a Meade LX200 GPS 12" telescope, focal lenght ~2000mm.A zoomed
Subscribe to:
Posts (Atom)
