Quote:
Originally Posted by clarinetcola
Hope i'm posting in the right forum
I bought an A4 size Baader AstroSolar film off Ebay to make a solar filter for my 8" Dob, I've done my search on the subject and I've seen different pictures of people only using a quarter of their aperture, but there are products for 8" SCT that filters the whole 8"'s worth.
The big question is what would I expect from (or should I even consider) a full aperture filter compared to just a opening a quarter (á la the duct tape filter on sidewalk astronomer's website) or even something in between?
cheers!
N
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I'm planning to do the same thing for my 10". Why not make it full aperture but also make a mask or two with different size apertures to fit over the full aperture.
From memory in using other members dedicated solar scopes at Snake Valley this type of filter shows you the sun spots but cancels out the prominence. Is this correct?
Richard