Years ago Roger Tuthill used 2 nesting aluminum pie pans with holes cut out and the material wedged in between. I do NOT KNOW if he had any patent on it or not, but don't think so. ALSO, be sure you have the right type of flexible mylar film to protect the eyes. Chuck Hards might be able to advise. Not all mylar is safe. Tuthill sandwiched 2 sheets together I think with the silvered sides facing one another to prevent scratching and leaking sunlight. Be SURE to a fix the material and pie pans so there is NO chance thay might separate at the wrong time. Best to epoxy together. Then find a round plasrtic lid pie cover to store it in. Good Luck and Be Sure and Be Safe!!! --- On Sat, 9/3/11, Chrismo <djchrismo@gmail.com> wrote: From: Chrismo <djchrismo@gmail.com> Subject: Re: [Utah-astronomy] Need solar filter material To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Saturday, September 3, 2011, 2:09 PM Just curious, since I don't know much about this end of things... would this film be "as good" as more expensive glass filters? I was planning to buy a filter for my 8" scope, but it looks like this stuff would end up costing about $100 less. Also, how would you go about making a filter using this material? would you just make a frame to fit over the end of the scope? On Sat, Sep 3, 2011 at 1:15 PM, Jared Smith <jared@smithplanet.com> wrote:
How much do you need? I have a big sheet of Baader visual film, but am making a couple filters this week. I might have enough for a small scope left over.
There are a couple ISS solar transits in Northern Utah coming up in the next week or so.
Jared
On Sat, Sep 3, 2011 at 11:46 AM, D P Pierce <starsbirdsglyphs@gmail.com> wrote:
I need some inexpensive solar filter material..
Deloy Pierce
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