Higher image resolutions:  
Telescope:
Takahashi FSQ106ED @ f/5 
Mount:
Astro Physics 900GTO 
Camera:
SBIG STL11000M 
Filter:
Baader 7nm Halpha 
Exposure:
MaximDL 4.63
180min (900s subs) @ f/5, chip temp -20C 
Processing:
MaximDL 5.03, CCDStack, Photoshop CS2 
Location:
Sierra Nevada, Spain 
Date:
22. Feb 2009