Image of Andromeda from bortle class 7, no filters, DSLR. It was done in 3 weeks, since i was not able to do more than 15 minutes of exporsure per night, since
Imaging the Andromeda Galaxy under Light Polluted Skies – Professor Morison's Astronomy Digest
Optolong Astronomy Filter - Andromeda is the nearest major galaxy to our own Milky Way Galaxy but it takes about two million years for light to reach us from there. The diffuse
Andromeda Galaxy taken with hydrogen alpha filter Coffee Mug | Zazzle.com