Aren't there a variety of densities available in photographic (compatible with camera threads) polarizing filters? I do have an adapter so 2" filters fit my camera. How much transmission would be too much? Over 50% or under 50%?
On 9/12/11, erikhansen@thebluezone.net <erikhansen@thebluezone.net> wrote:
Orion cells a set that rotate to give 50% to 0% transmission. I use them on the moon.
That's the type you want, and they are for density only.
Many DSLR camera "polarizing filters" are not for variable density, just glare reduction in outdoor photos. Those won't work in this application as they are a single filter, not a double.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php