Re: [APML]: sunspots?

[LiveTV@en.com]

I am not sure that stacked filters such as you describe will be safe 
for viewing. You may see spots all right...permanently.

I believe the filter factor for common sun filters is in the order of 
100,000 or something like that (maybe even higher). Can you achieve 
that level of reduction with neutral-density filters? I would think 
that filtering the damaging UV component would also be a 
consideration.

My 1600mm fl scope just exactly fills a full 35mm frame with the sun. 
A 200mm lens will probably give you such a small image that you would 
not see much.

Greg

> If I take a picture of the sun using stacked neutral-density filters
> or polarizers with a 200mm camera lens can I expect to see sunspots?
> 
> Paul Kline
> pk6811s@acad.drake.edu
> 
>