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H-alpha question
Hi, Me again. Seem to be asking a lot of questions at the moment. I am going to at least try and go for the horsehead. My understanding is that I need a H-alpha filter, aperture, good seeing, dark sky and a map.
In regard to the filter, are they all the same because Ive seen some cheap ones and because it will have limited use pretty much only on the horsehead, I would rather get it as cheap as possible. Is a cheap filter going to lower my chances of observing this target? Ive seen a baader on on ebay or $99 has anyone used this on the horsehead?
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