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Re: [ATM] Betr.: Re: cutting a big piece of plate glass - Polarizer

On Fri, 13 Jul 2007, George Anderson wrote:

> Linear polarizers have a rotatable frame. Circular polarizers don't.
>
> George Anderson
> Montreal Canada

This could make sense even with only one linear polarizer. I think
the sky has some polarization to it that is dependent on the
position of the Sun.

>From telescope using perspective, there are quasars and Seyfert
galaxies that should be polarized. I would guess that relative
other sky objects, like common stars, the signal strength from
these objects should depend on polarizer orientation (something
I have been wanting to tinker with).

Dominic

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