cleaning nebula/light pollution filter

[mental4astro]

Hey all,

I've got a Lumicon Light pollution filter which I've had for about 15 years.

It has seen a good amount of use.

I used it for the first time in a long while and noticed it needs a good clean.

How do I clean it? :shrug:

Should I clean it?:shrug:

Mental4astro.

[barx1963]

I used a lensepen on my Bintel Filters which seemed to work OK. Of course they a fairly cheap as filters go so not a huge risk! :whistle:
Got the lense pen direct from Bintel. I mainly was getting rid of a couple of fingerprints which were probably not a major prob anyway.