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Re: [APML] Bill Fletcher's Tri-color work(was 23a filter)


> See: http://www.aa6g.org/Astronomy/articles.html
>
> for "Color Photography of Emission Line Objects" and "Assembling a
Tricolor Photo".
>
> Examples can be viewed at:  http://www.aa6g.org/Astronomy/astrophotos.html
>

The photos are beautiful! However, I don't have the telescope you have, so
I'll have to do this with my normal lenses (135mm should be fine).

If I didn't want to have custom-made filters or try finding exotic stuff,
then the filters I'm to use are 25A, 47 and 58 - are these the filters
usually used in black&white terrestrial photography to enhance contrast? If
so, those wouldn't be too hard to get....

Ulrich


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