Canon 350D Hap Griffin Baader Mod
Astronomik CLS filter
Celestron 9.25 with 0.63 reducer
50x300sec at iso 1600
30 Darks/Flats/Bias
Very low on the horizon for me, through the haze and fog made for a difficult image.
The
Helix Nebula (also known as
NGC 7293) spans about 2.5 light years and is about 650 light-years away in the
constellation Aquarius. It is one of the closest
planetary nebulae to earth and was discovered by
Karl Ludwig Harding before 1824. It has a very similar appearance to the
Ring Nebula. It is also similar in size, age, and physical characteristics to the
Dumbbell Nebula, with the significant difference in appearance being a consequence of the relative proximity and more nearly equatorial viewing angle of the Dumbbell.
September 5, 2007