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About this Image
The Helix Nebula is a vast glowing cloud of Hydrogen, Nitrogen, Oxygen, and other elements some 500 light years away
toward the constellation Aquarius and spans about 2.5 light-years.
The nebula is made up of gas ejected from a blueish dying star, which is located in the center of the nebula.
20" cassegrain in corrected primary and secondary focus at f/3 and f/9,
|Camera||SBIG STL-11000M, internal filter wheel|
|Date||L: Aug 04, 2008 at f/9, colors from 2007 at f/3.|
|Sky Conditions||mag 6.5, high transparency, temperature 10 C,|
Ha:L:R:G:B= 180:180:60:60:60 min by Josch Hambsch
(10 min sub-exposures for LRGB, 30 min subs for Ha)
Image aquisition and calibration in Maxim DL 4.5; |
Photoshop: curves, color balance;
Thanks to Josch and Karel for providing the raw data!