Ha! The only way to get one of those is to go Back to the Future. BB ----- Original Message ----- From: "Bob Moore" <BMoore@commercecrg.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Thursday, May 10, 2007 12:44 PM Subject: RE: [Utah-astronomy] How do colored planetary filters work? | You just need a flux capacitor then | | | Bob Moore | Commerce CRG - Salt Lake City office | 175 East 400 South, Suite 700 | Salt Lake City, Utah 84111 | Direct: 801-303-5418 | Main: 801-322-2000 | Fax: 801-322-2040 | BMoore@commercecrg.com | www.commercecrg.com | | | | | -----Original Message----- | | From: utah-astronomy-bounces+bmoore=commercecrg.com@mailman.xmission.com | [mailto:utah-astronomy-bounces+bmoore=commercecrg.com@mailman.xmission.c | om] On Behalf Of Kurt Fisher | Sent: Thursday, May 10, 2007 12:40 PM | To: utah-astronomy@mailman.xmission.com | Subject: Re: [Utah-astronomy] How do colored planetary filters work? | | Chuck wrote: | | > I don't doubt at all that colors similar to the filter | > *appear* lighter, BUT- It's a contrast illusion. . . . | > The filter does not increase flux . . . | | Good clarification. Yes, there's no question that we are discussing | psychological color perception and not increases in luminance flux. - | Kurt | | | | | _______________________________________________ | Sent via CSolutions - http://www.csolutions.net | | | | | | | _______________________________________________ | 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 | | _______________________________________________ | 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 |