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Post Info TOPIC: Baader Semi Apo Filter


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RE: Baader Semi Apo Filter
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SemiApo1.gif

This transmission spectrum of the filter shows the quite sharp cut-off at 690nm (Infra-red).

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Baader Semi Apo Filter 31.7mm

The Semi-APO works like it's name implies - delivering an amazingly neutral view, while cutting most of the annoying and contrast-robbing violet fringe that plagues all achromats.
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The Semi-APO works like it's name implies - delivering an amazingly neutral view, while cutting most of the annoying and contrast-robbing violet fringe that plagues all achromats. The Semi-APO filter combines a stronger Fringe Killer coating formula with the Moon&Skyglow Neodymium substrate. The result is similar performance to the Fringe Killer + Moon&Skyglow combination, but with a slightly stronger violet cut.
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2" Semi-APO Filter ~ 106.00
1.25" Semi-APO Filter ~ 62.00



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