Re: [APML] Diffusion Filter and Photoshop article

["John C. Mirtle" <spampit@shaw.ca>]

George,
    I believe that it was Chris Schur that made mention of the fact that
Akira Fuji uses a nylon stocking as a diffuser for his work. This was the
reason why I brought it up. (but Chris didn't mention what colour!) A nylon
stretched over a needlepoint round wooden thingy might make a simple full
aperture filter, certainly simpler than rubbing two pieces of glass
together. Plus, while waiting for it to get dark, armed with a nylon
stocking you have all the tools you need to create your own Monty Python
sketch..... :-)

still waiting for perpetual twilight to end.....

John Mirtle
+51°N 114°W

----- Original Message ----- 
From: "George Anderson" <georgea@cam.org>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Sunday, July 06, 2003 8:47 PM
Subject: Re: [APML] Diffusion Filter and Photoshop article


Hi Don

You might (and this is only a guess) be able to make one by getting two
pieces of plate glass that are larger than the front of your scope. Use
one as a grinding surface and grind both sides of the piece to be used
as a filter with 5 micron aluminum oxide and water. I wouldn't go the
full grind but just enough to put a light haze on it. My reasoning for
doing both sides is to hopefully reduce ghost reflections.

George Anderson
Montreal Canada

Clear skies and good health


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