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Hi
yep it's the semi APO version and I did use the UV filter. I suspect I'd have gotten more of the nebula without the UV filter but then I'd have the halo around stars
I might try it again at some poin with more exposures obviously and with/without the UV filter to see how it fares.
I'm pretty happy with the upgrade from the 100mm spotty I had before which didnt enable any imaging.
frank
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