[casstony]

I'm looking at the DGM Optics GCE (galaxy contrast enhancement) filter and the Lumicon Deep Sky filter.

They have similar transmission curves though the GCE lets a bit more of the red end of the sprectrum through and thus more light from galaxies, but it should also let some Na light pollution through too.

Does anyone have experience with either or both of these filters near but not under the direct glare of streetlights when observing galaxies?

I've had great success observing nebulae with UHC/OIII filters in a filter wheel with my C11 - the filter wheel makes a big difference and I consider it an essential piece of equipment now.