Thanks friends for your comments. It's great to hear from you.
I completely agree with the comments regarding the tree. I believe I tried. I couldn't remember exactly. It was long time ago.
If I used reverse GND or cameras with greater dynamic range such as as Nikon D800 or IQ180, the DR would be much better.
Although the picture is not perfect, I love the sky and have never seen the sky like this again.
Cheers,
Pramote