[sci.astro] Direct view solar filters

tj@alliant.UUCP (Tom Jaskiewicz) (10/17/86)

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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