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Diffraction spikes with refractor
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12-11-2020, 10:03 AM
Atmos
(Colin)
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Join Date: Aug 2011
Location: Melbourne
Posts: 7,013
If this is moving towards the edge of the frame then it’s likely to be caused by an intrusion in the lens cell. Completely normal, sometimes the spacer (wedges) separating the lens’ intrude a fraction into the optical path.
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