CLS filter advice

[Kenboy]

Hi all

I have a Astronomik CLS filter for my astro-modified DSLR. It's definitely useful for DSO imaging in Bortle 5/6 skies 

But would you use it in Bortle 3/4 skies? Or would you recommend imaging without it? 

Thanks

[carastro]

I would not use it in Bortle 4 skies, definitely not in Bortle 3.

 

Carole

[ONIKKINEN]

For galaxies and other stellar targets if the goal is to get a real colour result: Would never use one as its counterproductive. Well, maybe if i was imaging from a location that has all of its street lights be the old yellow ones, instead of any LED lights. But even then i would cut off a huge chunk of the galaxy signal when using CLS filters.

For nebulae maybe, but probably not in bortle 5 or darker. But then again i dont really image nebulae so no i would not use one in any level of light pollution.