Lou I may not be the best one to answer that question, but this is what I noticed with the Variable Polarizer, you can adjust the light level. I put the filter on an eyepiece not knowing how it worked I pointed the eyepiece at my neighbors outdoor light and began turning the filter ring. I noticed that my neighbors light went from bright to dark. I adjusted it about 1/2 way and then put the eyepiece back in the scope and looked at the moon. It was more comfortable for me looking at the moon that way. The set of filters I got from Orion are here: http://www.telescope.com/shopping/product/detailmain.jsp?itemID=4764&itemTyp... I got them when they were on sale for like $60.00. Jim Griffin Louis A Civ OO-ALC/MAKGBA <Louis.Griffin@HILL.af.mil> wrote: "I think the filters did for me is that it kept my eye from being overwhelmed by the bright light of the moon." Jim, after your post yesterday I got both of my scopes out and had a look, I am intrigued, but I definately need some filtration especially with the dob, but even the Mak Newt was painfully bright but the contrast at the edge of the darkness was phenomenal. What filter would work the best at just keeping the light down - any idea how dark it needs to be? _______________________________________________ UVAA mailing list UVAA@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/uvaa --------------------------------- Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time.