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FSQ is fairly immune to seeing conditions though. One of its great assets.
Bad seeing is something to behold at 2-3 metres focal length. On a bad night (like a lot of nights in the last week) seeing can make it seem the scope just suddenly went badly out of focus, you take another focus shot and it seems fairly in focus then badly out of focus again.
A series of exposures usually look like they are badly out of focus.
Its become clear to me why they put big scopes on mountains! Luckily there are also nights when everything is quite sharp. Just not often lately.
Greg.
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