Dew shield make a difference for light pollution?

[SacRiker]

Before I bought my dob, I was close to buying a Nexstar 8se...in preparation for that purchase I bought the celestron dew shield. Would using this dew shield on my 8" dob actually help battle light pollution at all?

[Charic]

I use a home made one, camping foam underlay, its about 18" long at a guess?

It should help to collimate some of the stray light, but not all of it. The longer the tube, the darker the tunnel, up to a limit!

There's no substitute to getting away from man-made lighting and finding a  better dark site.

Flock, shield, cover, hoodies all good, just try them to see if you sense/feel any difference.
I think there's a difference to my eyes, given that my OTA is extended by the dew shield, the scope is inside a tent, so am I, and I cant see the outside world except through the eyepiece. Sounds awkward, but satisfies my need.
Scope alone at a darker site, the difference is stunning.

[Putaendo Patrick]

Yes, it will to an extent help to shield direct LP from for example nearly streetlights. But no, if general levels of LP are high, it won't help that much. Try it out and see if it helps at your location, nothing lost!