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From: tj@alliant.UUCP (Tom Jaskiewicz)
Newsgroups: sci.astro
Subject: Direct view solar filters
Message-ID: <333@alliant.UUCP>
Date: Thu, 16-Oct-86 19:19:27 EDT
Article-I.D.: alliant.333
Posted: Thu Oct 16 19:19:27 1986
Date-Received: Tue, 21-Oct-86 08:08:28 EDT
Reply-To: tj@alliant.UUCP (Tom Jaskiewicz)
Organization: Alliant Computer Systems, Acton, MA
Lines: 21

In an article, someone wrote:
>surface, like a screen or flat sheet.  Or you may want to use a safe
>filter.  An easy, cheap filter is . . .

Please don't give advice like this in a large forum like net.astro.
Even if it is perfectly safe, a well-meaning, innocent person can
misinterpret the instructions, or use very similar materials, or take a
shortcut that doesn't work, . . .  And in the case of a direct view
solar filter, that person could blind themself.

A friend once saw me just showing my own homemade (and perfectly safe!)
filter to a curious person.  My friend pointed out that I really
shouldn't have done it.  The third person could have seen my filter and
tried to make one like it, without realizing that the exact materials I
used were vital.  I've been pretty careful since then.

Please be careful too.
-- 
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