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Wednesday, August 8, 2012

Cygnus zoom in series, the "Crescent Nebula, NGC 6888



Due the high latitude, 65N, deep sky astronomical imaging can't be done up here yet.
Instead I made an other  zoom in series from my older material to show the apparent scale in the sky.

This time I'm zooming from 23 to 0,3 degrees of sky at the direction of NGC 6888 in Cygnus.

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 level of details.
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 have added a "Moon circle" in 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.



Cygnus zoom in series, a study of the apparent scale in the sky.
Note. The apparent size of the full Moon is marked as a gray circle at upper Right corner.








A star map for the orientation




Images used in this series:

A giant, 18-panels, mosaic of the Cygnus constellation with 200mm canon EF at f1.8:
http://astroanarchy.blogspot.com/2011/12/cygnus-mosaic-18-panels-and-22-x-14.html

Closeup of NGC 6888, the "Crescent Nebula" with Meade LX 200 GPS, reduced to f5 ~2000mm:
http://astroanarchy.blogspot.fi/2011/01/ngc-6888-crescent-nebula-reprocessed.html







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