Thread: Diffraction spikes with refractor
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Old 12-11-2020, 12:13 PM
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DavidTrap (David)
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Location: Brisbane
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Ditto for what Colin said.

There are three 0.1mm thick aluminium spacers about 10x4mm that sit between the crown and flint of a Tak doublet. Have seen similar effects on bright stars with that scope.

DT
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