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Old 04-06-2016, 08:10 AM
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Shiraz (Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
Posts: 4,918
to go with earlier M83 post, here is a screen shot of a single sub (STF stretch, still with bias) showing vignetting with the 1.25 filters - it doesn't look too bad and the filter wheel can be moved about 10mm closer to the chip, which will help further.
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