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Lovelly Marc!
I am getting ready to give my 200mm lense a run but I like the round stars you get from fully open aperture. But worried about the quality. You seem quite happy with your lense fully open. Any plans to stop down via an external aperture? I hate the diffraction spikes on the bright stars I get on my Canon lense when I stop down. I would be interested to see your results if you do decide to stop down a bit.
Well done and lovelly to view with such a wide field.
Darrin...
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