>
>
>I'll try to get some pictures of the Transit of Venus, so I need a solar
>filter. Since a 'real' one is impossible to get here (at least, on time),
>I'll use a fully darkened strip of 120 B&W film (*not* chromogenic!!!).
>Back to the solar eclipse of 1999 I made my filters that way, and it worked
>properly -- pics came OK and our retinas weren't burned ;-)
>
Carlos, go to a welding supply store and get the replacement protective
glass for a welder's helmet. They come in various densities and so you
must ask to take them outside and check the sun for the correct one.
Perhaps you will have to stack a couple to get the required darkness.
Mike
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