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All the material on this website is copyrighted to J-P Metsavainio, if not otherwise stated. Any content on this website may not be reproduced without the author’s permission.

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Friday, May 27, 2011

M1, the "Crab Nebula", the 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.

The full Moon



The Crab Nebula, Messier 1
Ra  05h 34m 32 Dec +22° 00′ 52", In constellation Taurus


Images are in Natural color palette from the emission of ionized elements, R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
NOTE. The size of the full Moon (0,5 degrees) is marked as scale.

Single image of the M1 supernova remnant is used for this scale study. Image was taken with a Meade LX200 GPS 12" telescope at ~f5. QHY9 cooled astronomical camera and the Baader narrowband filter set.

Original image with a technical data:






Thursday, May 26, 2011

Cat's Eye Nebula, study of an 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.

The full Moon


The "Cat's Eye Nebula"
Ra  17h 58m 33 Dec +66° 37′ 59"


Images are 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 scale.


Single image of the Cat's eye Nebula is used for this scale study. Image was taken with a Meade LX200 GPS 12" telescope at ~f5. QHY9 cooled astronomical camera and the Baader narrowband filter set.

Original image with a technical data:

The actual nebula is very small, rarely imaged outer halo is dominating the view.






IC 1396, 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.
The full Moon



IC1396 and the "Elephant's Trunk Nebula"
In constellation Cepheus

Images are in Natural color palette from the emission of ionized elements, R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
NOTE. The size of the full Moon (0,5 degrees) is marked as scale.

Images used in the series above from top to bottom

    1. A wide field mosaic of IC1396 and Sharpless 129, Sh2-129, at Left. Image is taken with a Canon FD 200mm f2.8 camera lens.  
    2. A IC1396 part of the mosaic, Canon FD 200mm f2.8.
    3. Target imaged with a Tokina AT-X 300mm f2.8 camera lens. 
    4. A close up of the "Elephant's Trunk Nebula" iumaged with a Meade LX200 GPS 12" telescope, focal lenght ~2000mm
Links to an original images used in series from to to bottom






Wednesday, May 25, 2011

Pelican Nebula, IC 5070, The scale in a sky, zoom in series





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 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.
The full Moon



Pelican Nebula
In constellation Cygnus

A HST-palette closeup of the Pelican Nebula.
NOTE. The size of the full Moon (0,5 degrees) is marked as a scale.

Two images are used for the series, first is a wide field shot with a Tokina AT-X 300mm f2.8 camera lens.
Second image, at the bottom, is shot with a Meade LX200 GPS 12" reduced under 2000mm.
Baader narrowband filter set was used with both images, wide field was shot with a QHY8 and closeup with QHY9 cooled astronomical cameras.