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Old 25-07-2021, 02:57 PM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
Alex,
I assume you mean a solar film filter (Baader)?
If so, then you're restricted to White Light Observing. This shows the sunspots and surrounding faculae, and with larger apertures >100mm will also show the surface granulation.
Adding an Ha filter doesn't change the view, it may help improve contrast but that's it.

Definitely no solar Ha detail - that requires special narrow band filters ($$$$$$)
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