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Saturday, July 16, 2011

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
    1. A mosaic image of Sh2-129 and IC1396 at Right. Images are taken with a Canon FD200mm f2.8 camera lens and QHY8.  
    2. A Sh2-129 half of the previous mosaic 
    3. 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

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