Filters for Astro-Video cameras are hard to recommend due to the relatively short exposures involved. After many tests this gentle Universal Contrast Filter (1.25″) has shown merit in reducing light pollution and increasing contrast on all objects.
It is effective mainly in areas where the local light pollution is due to Sodium (yellowish) light.
It’s also been found to be effective in revealing surface features on the planets Mars, Jupiter and Saturn as well as reducing glare when viewing the Moon.