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Old 22-01-2008, 03:37 PM
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erick (Eric)
Starcatcher

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Join Date: Dec 2006
Location: Gerringong
Posts: 8,548
Quote:
Originally Posted by Matty P View Post
I did a search and I found some amazing pics of the Sun taken with a PST. I really want one now! I am a bit worried about how small the PST is, only 40mm of aperture. A little bit small for my likings.
I may not be right here, but you generally want aperture to capture light. The Sun's apparent magnitude is -26.7. I think a pinhole would capture enough light

Edit: Or an I missing something in terms of resolution obtainable? I do recall reading the larger the aperture, the more of the daytime's natural bad seeing that you capture - hence the use of off-axis small aperture solar filters for reflectors.
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