Explore Scientific is trying to prove that it can make perfect glasses for every pocket - better than others. The LER 52 series are argon-filled, waterproof glasses with a much greater exit pupil than Ploessle, with great layers and very good flatness of the field. • focal length: 6.5 mm
• AFOV (own field of view): 52 °
• construction: 6 elements in 3 groups
• layers: EMD
• exit pupil offset: 16 mm
• filter thread: yes, 1.25 "(M28.5 x 0.6)
• waterproof, filled with argon
• casting standard: 1.25 "
• weight: 220 g 10 years
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