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A dramatic example of the colour fringe reduction capabilities of the BAADER SEMI-APO filter courtesy of David Jeacocke.

Above, distant leaves imaged using a camcorder and achromat refractor and reveals typical purple fringing symptoms of chromatic aberration.

Below the Semi-APO filter is used with the eyepiece. The purplish chromatic abberation effects is almost completely absent while overall contrast is improved.


See the Semi-APO filter data sheet here







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