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I'm definitely not seeing triangles but the diffraction spikes do go in different directions when on opposite sides of focus.
Part of my problem is my eyesight isn't perfect. And the other is lack of experience. I've not looked through many scopes and the ones I've owned I've owned for years. Yet another problem is I don't have decent high power lenses - my 10mm and 6.3mm plossls are my best options. I have a barely usable 4mm one, but it's not good fora star test.
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