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There are filters[0] you can add to lenses that will filter out certain types of lights. While it will never replace finding an actual dark sky location, it will slightly improve what can be imaged.

[0]http://astronomyonline.info/best-light-pollution-filters/

If there aren't any bright objects in the direct field of view it should be possible to see flashes in the sky on a clear night.

Could possibly capture the ultra red (heat) range that are usually filtered out by normal cameras.