This is the solar filter I used on my FOA-60Q for the 2023 solar eclipse in WA. It's internal diameter measures just under 95mm but best suited to at least 5mm below that as if it is too tight the soft foam will start to tear when you put it on.
You need the OD of your dew shield to be less than about 90mm, so great for 60-70mm scopes.
$80 plus postage.
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