Alstar Astronomical T2-Extension Tube Kit for Cameras and eyepieces - Length 5mm 8mm 10mm 15mm 20mm 40mm M42x0.75 on Both Sides
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Description
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Male thread: M42x0.75; Female thread: M42x0.75; Eliminates a range of focusing problems All metal construction and anodizing aluminium process for long time use Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners The extension tube has a T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography The required spacing can be achieved by combining several extenders of differing lengths; you can use 1 piece; 2 pieces; 3 pieces or 4 pieces of the extension rings as you like
Description
(1)
Male thread: M42x0.75; Female thread: M42x0.75; Eliminates a range of focusing problems All metal construction and anodizing aluminium process for long time use Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners The extension tube has a T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography The required spacing can be achieved by combining several extenders of differing lengths; you can use 1 piece; 2 pieces; 3 pieces or 4 pieces of the extension rings as you like
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