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mark, could easily be... however a lot of the difference was visible as image wobbling and fast moving distortions, the sort of thing that can be attributed to tube or mirror currents. This was happening on Mikes scope while mine, just a few metres away, was showing a very stable image.
We've got Mikes cooler up and going now, so if we get another good night before he goes back then we should be able to get a good idea of how the optics compare.
cheers, Bird
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