09.10.2005 - Pürahöfen together with Franz Gruber
The Helix Nebula is one of the closest of all planetary nebulae. The object consists of a large shell of very tenuous gas od oxygen atomsbeing excited by the ultraviolet radiation flowing out from from a extremely hot central star. The ring itself glows with the light of excited nitrogen and hydrogen atoms. A closer look into the center shows a helical structure with two twists, but this is an optical illusion.
SKY 90 f/4.5 , Starlight SXV-M25, 90min RGB
Planetary Nebula
Size: 12' x 10'
Constellation: Aquarius
Magnitude: 7.3
Distance: 500 light years
RA: 22h 29m 38s
Dec: -20° 48'
Size: 12' x 10'
Constellation: Aquarius
Magnitude: 7.3
Distance: 500 light years
RA: 22h 29m 38s
Dec: -20° 48'