2" Light pollution filter for CCD imaging

[Endrexil]

hi all,

Interested in a 2" light pollution filter to increase my SNR when imaging from my balcony in the direction of Sydney's light pollution cone.
Have a mono CCD with filterwheel imaging in LRGB.

So far thinking either astronomic CLS or Idas P2.

If anyone has one of these or equivalent and keen to sell would be appreciated to hear offers.

I have a CLS EOS Clip filter for crop sensor DSLR which Id be happy to trade if that's of interest. Otherwise happy to buy the 2" filter of you if I can get one for a reasonable price tag.

Thanks,
Mathias