Quote:
Originally Posted by jjjnettie
I've only ever viewed and imaged the Sun through a filtered 2" aperture reduction hole in the dust cap.
I mean, look at the PST's, they have only a 40mm aperture.
That will leave you with heaps of film left over to make a filter for your finder scope and binos.
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I'd go the other way and use a full size filter and aperture it down if you see the need.
The first thing I did with my 40mm PST was upp the aperture to 80mm via modifications. The resolution at 40mm was considerably less than at 80mm. The view through the SCT with solar filter is the best out of all of my scopes with white light solar filters on them.
You can always cut the filter down later if you change your mind.