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Solar Filters
In tidying up my cupboards of astro bits and pieces (most of which has not seen the light for ages), I found a Thousand Oaks Solar filter Type 2+. I've never used it either visually or imaging and have no other experience with solar imaging so I am going to ask for a bit of guidance.
It is a 4" (115mm ID) glass filter and ought to fit my BD80 well enough. But I am unsure whether I should also be thinking about using a Ha filter as well. This means using a good imaging camera - probably my SBIG STF8300M and I rather not cook it's innards if I can avoid it.
I could also just use an old Canon 40D I have here which would not be quite the same sort of loss if I damaged it. And a remaining question would be about the use of barlows. Is the TO filter going to adequately (safely) reduce the heat from the sun to make this feasible?
Peter
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