Jump to content


Polarising filters for visual


Recommended Posts

By "revolvable" i assume you mean variable (2 part) filters. Variable polarizing filters are a bit more expensive. A single polarizing will do. You dont even need that to be honest. A single polarizing filter will do.............or just a standard Moon filter.

These will only cut down the brightness. They wont have much effect on cutting down light pollution. 

To help reduce LP, you need a light pollution filter (LPF). They help. It depends how much you can spend. 

Its a personal choice if you use a Moon filter or not. LP filters........work, depending how bad the LP is.

Edited by LukeSkywatcher
Link to comment
Share on other sites

I observe mostly in a Red Zone and, frankly, I don't know any EFFECTIVE LP filter. Any polarizer is useless for LP reduction. Sometimes UHC can help but not much. As they say, the best is a "gasoline filter", when you load full tank and drive to a dark sky area :icon_biggrin:. Or wait for a moonless night.

Variable polarizer is good for closely located objects different in brightness like Sirius A and B etc.  You can cut the price by getting 2 inexpensive single polarizers e.g. from eBay or so. Attach one to a diagonal or 1.25/2 adapter (in reflector) and the other one to eyepiece, or better, to an extension tube and you can change eyepieces on the go.



  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.