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Oculaire de collimation Cheshire SV197 1,25 pouce – SVBONY SV580 Quelle est sa réponse en Variant:25mm Quelle est sa réponse en fréquence Detailed revelation of sunspots and eclipses The Cheshire collimation eyepiece SV197 is specifically designed for Newtonian and SCT reflector telescopes but can also be used to accurately align the optics of refractor telescopes Dimensions: 141×41×32mm
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