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Old 10-01-2020, 10:03 AM
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multiweb (Marc)
ze frogginator

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Join Date: Oct 2007
Location: Hinchinbrook
Posts: 18,524
It's ok if your diffraction spikes look dotted as long as you can see the general pattern and center. Depending on the filters used and focal length and critical focus zone of your telescope the difference in focus between filters might not be big enough to notice visually. So no problem there.
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