Haven't tried it, but I can pass along this tidbit. Until a couple of years ago, the Orion filters were manufactured in Japan. I have one of the older Ultrablocks, and it's an excellent filter. Then Orion changed to a Korean manufacturer. There's no reason to expect that quality would go down, but it's reasonable to expect there might be some differences. I haven't seen any comparative reviews of the older vs. newer filters. Michael -----Original Message----- From: Chuck Hards <chuckhards@yahoo.com> Sent: Aug 8, 2005 4:40 PM To: Utah-Astro <utah-astronomy@mailman.xmission.com> Subject: [Utah-astronomy] Orion OIII filter Has anyone tried the Orion OIII filter? The price for the 2" is particularly attractive. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ 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.utahastronomy.com