You'd be surprised what you can see under light pollutes skies. Especially in narrowband. I built an observatory in a bortle 7 and I get plenty of good data. Link in profile if you wanna see my work
I can see Jupiter, Saturn, the Moon, etc. But even looking at Andromeda is difficult. Pleiades is also difficult. I'm minutes outside of downtown, so light pollution in my area is intense.
Nice shots! Do you have any information posted about your observatory build and specs?