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I think this thread has arrived at a stalemate. We need to all go out there and spend time with the scopes....
I am not into the mathematics of θ = 1.22 * λ / d but I have been viewing Saturn for many years using some very high quality optics, including 210, 250 and 300mm Mewlons, TEC MC200 and 18" Newtonians from sites all around western and northern NSW including Coolah, Dubbo, Cookamidgera, Tamworth, Coonabarabran......
I have only seen it twice, both times with 18" scopes....
Last edited by Rainmaker; 14-05-2020 at 08:46 PM.
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