Light pollution filter for DSLR Widefield

[Mr niall]

I was wondering if there was such a thing as a light pollution reducing filter that would work with reasonably widefield lenses (eg up to 100mm) on a DSLR?

If I could just extend my exposure times up to about 60 secs I'd be really happy indeed! Currently at 50mm and lower I'm getting completely washed out. I guess that is the peril of living in suburban skies! And the gradual change from sodium to LED street lights does kind make it more challenging to pick a light pollution filter as I can't work out what it is I'm actually looking for...

I've seen some that look quite good, but some of them seem quite expensive and I'm a bit nervous about forking out if I'm not going to notice any massive improvements. 

https://www.amazon.co.uk/gp/product/B07FQD5D8R/ref=ox_sc_act_title_1?smid=A3ICDZYF91YIY1&psc=1

https://www.firstlightoptics.com/rgb-filters-filter-sets/optolong-l-pro-light-pollution-broadband-filter.html

https://www.firstlightoptics.com/optolong-filters/optolong-cls-light-pollution-filter.html

https://www.firstlightoptics.com/light-pollution-reduction/astronomik-cls-filter.html

[Chefgage]

Not got any advice in how good they work but if you are going for the clip in kind then just be aware with the problem of canon lenses. The clip in 'cls'  filter will work fine with the EF lenses but the EF-S Lenses have a bit that protrudes into the camera itself and will hit the filter stopping the lens clicking in place. Of course if you don't use canon lenses then ignore the above (although I don't know if this same problem applies to other camera/lens makes).

[PeterCPC]

Haida NonoPro Clear-night Filters do help.

Peter