Venus Transit

Started Jun 6, 2012 | Discussions thread
MOD imqqmi Veteran Member • Posts: 8,631
Re: Venus Transit

Dan Finnerty wrote:

Nothing special, standard solar film filter for my telescope. I just held it up in front of the lens and braced myself against a tree trunk. Sunspots are easy (if there are any). The dramatic shots that show solar prominences and complex features are Hydrogen-alpha narrow band filters and they cost as much as an L lens. Someday...

Thanks for the details Dan! I'll lookup what a standard solar filter does. Now that you mention it I've read about those Hydro-alpha filters, the effect is very good indeed but as you said it's really expensive.

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Kind regards

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