On Sat, Nov 8, 2014 at 1:26 PM, Greg Chalik <mrg3105@gmail.com> wrote:

This article talks about telescope filters

I wonder if anyone could offer a better explanation of why the colour is as depicted in the image

Thank you in advance

Greg

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Craig Berry (http://google.com/+CraigBerry)
"Eternity is in love with the productions of time." - William Blake