Thread: QHY268 Mono coming soon
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  #26  
Old 09-01-2021, 04:36 PM
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Wilsil (Wilco)
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Join Date: Jun 2020
Location: Greenwood
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I asked the same question when I ordered the 268M.
2" is preferable as you will not have any vignetting.
36mm are do-able but there is a chance of vigneting.
That's what they told me.
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