The Pacman nebula – a work in progress

Together with a few astrophotographers I rent a telescope in Spain (not as expensive as iTelescope, not even close 😉 ). Just starting to learn working with that one, but the skies are very dark there as well (SQM of about 20-21 without moon). As I saw the milky way overhere for the first time in my life, I wonder what the SQM at the observatory is approximately?

I started with collecting H-alpha data of the Pacman nebula (NGC 281), 8x 10 min exposures and stacked in AstroPixelProcessor. To get the noise down I want to extend that to a few hours and combining it with OIII and maybe SII, which will be something for the near future.