Friday, August 24, 2012
Tulip Nebula, Sh2-101, a study about the scale in a sky
This time
I'm zooming from 23 to 0,5 degrees of sky at the direction of the Tulip Nebula,
Sh2-101 in Cygnus.
I have shot many targets with several focal
lengths. Due to that, I will publish some of my
material as image sets, with a different field of view and level of details. The fractal
nature of our universe stands out nicely in this way and it will make the
orientation more easy.
Many times, it's difficult to understand the
image scale of astronomical images.
Therefore I
have added a "Moon circle" in the images to show the angular scale in
the sky. The full Moon has an angular size of ~30 arc minutes, that's equal to
~0,5 degrees.
Click for a large image
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 Sh2-101, the "Tulip Nebula" with Meade LX 200 GPS, reduced to f5 ~2000mm:
http://astroanarchy.blogspot.fi/2011/01/tulip-nebula-sh2-101-wide-field-closeup.html
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