That's not really how telescopes work.
If it's light pollution additional aperture does not by itself preferentially distinguish between terrestrial and extra terrestrial light.
If it's humidity, radiated heat and particulate matter you'll hit the diffraction limit of your local atmosphere before you hit the resolution of a half meter scope.
N.B. if you have the money to buy a 1 meter scope and motorized mount sufficient for it you have the money to take a lot of trips with pair of binoculars to the Chilean desert.
I have a big-ass telescope and it's the main reason I can see stuff in light pollution. The trick, that I'm sure you know, is to pickup a bucket-load of light, filter the pollution light and let pass the star light. They are different colors, basically.
