William Optics SWAN 20 mm 1.25 in 72 degrees William Optics eyepieces opinie


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William Optics SWAN 20 mm 1.25 in 72 degrees
 
 
Availability: In stock, can be sent within 24 hours

 

 
William Optics SWAN 20 mm 1.25 in 72 degrees
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William Optics SWAN is a well-designed, wide-angle eyepiece with large lenses for small amounts of money. Own field of view of the eyepiece (AFOV) equal to 72 °. The optics are fully covered with good anti-reflective layers.

The most important features

• own field of view equal to 72 °
• all glass - air boundaries covered with very good layers
• extraordinary correction of chromatic aberration
• sharpness and good contrast
• parfocal with glasses from the series
• the whole interior of the eyepiece well blackened (baffle, the edges of the lens)
• anodized black body, mechanically resistant
• equipped with a filter thread

Technical parameters

• model: SWAN 20
• focal length: 20 mm
• optical design: 5 elements in 4 groups
• own field of view (AFOV): 72 °
eye relief : 17 mm
• Luminaire diameter: 1.25 inches
• layers: FMC
• parfocality: yes
• weight: 100 g

Warranty

2 years








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